All Words Glossary

Glossary of Computing Terms
beginning with letter C
Browse the Computing Glossary
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CAD Tweet Definition of CAD Like Definition of CAD on Facebook
abbreviation (infl, en, abbreviation)
  1. Canadian Dollar (currency code)
  1. Computer Aided Design. (engineering)
  2. Computer Aided Dispatch (public safety)
  3. Computer Aided Drafting.
  4. Computer Aided Detection
  5. Coronary Artery Disease
  6. Cash Against Documents
call Tweet Definition of call Like Definition of call on Facebook
  1. A telephone conversation.
I received several phone calls today.
I received several calls today.
  1. A social visit.
I paid a to a dear friend of mine.
  1. A cry or shout.
He heard a from the other side of the room.
  1. The characteristic cry of a bird.
That sound is the distinctive of the cuckoo bird.
  1. A beckoning or summoning.
I had to yield to the of the wild.
  1. (finance): A contract to buy stock (See w:stock_option for further reading); compare put.
  2. (Cricket) The act of calling to the other batsman.
  3. (Cricket) The state of being the batsman whose role it is to call (depends on where the ball goes.)
  4. (Medicine) An overnight duty in the hospital.
  5. (computing) The act of jumping to a subprogram, saving the means to return to the point.
  6. A statement of a particular state, or rule, made in many games such as bridge, craps, jacks, and so on.
There was a 20 dollar bet on the table, and my was 9.
  1. To request, summon, or beckon.
That person is hurt, for help!
  1. To cry or shout.
I can't see you. Call out to me so I can find you.
  1. To contact by telephone.
Why don't you me in the morning.
  1. To pay a social visit.
We could always on a friend.
  1. To name or refer to.
Why don't we dispense with the formalities. Please me Al.
  1. (reflexively: to be called) Of a person, to have as one's name; of a thing, to have as its name.
I'm called John.
A very tall building is called a skyscraper.
  1. (Cricket) (of a batsman): To shout directions to the other batsman on whether or not they shoud take a run.
  2. (Cricket) (of a fielder): To shout to other fielders that he intends to take a catch (thus avoiding collisions.)
  3. (poker): To match or equal the amount of poker chips in the pot as the player that bet.
  4. (with an object preceded by the preposition for) To require, demand
  1. Verb, demand.
This job calls for patience.
  1. To state, or invoke a rule, in many games such as bridge, craps, jacks, and so on.
My partner called 2 spades.
CAR Tweet Definition of CAR Like Definition of CAR on Facebook
  1. Central African Republic
carriage return Tweet Definition of carriage return Like Definition of carriage return on Facebook
noun or return key
  1. On a mechanical typewriter the action or result that comes about using the return lever which when moved caused the paper holding carriage to return to it's home (left margin position) and advance the line advance roller by single-space, double spaced, double-space or one-and-a-half-spaced lines down the page being typed.
  2. On a electric typewriter or electronic (computer) printer the key, key press, or control code which causes the carriage or print-head to return to it's home (left margin position) and advance the roller similarly, or the description of taking the action giving that result.
  3. (computing) On a computer running a text editing applications program, the key which generates a typewriter-like carriage return on the computer keyboard by generating a CR, normally paired with a line feed) as the CRLF control code sequence or newline. Since the Mid-1980's this key is usually labeled as the enter key on computers.
  4. (computing) The control character (0x0D in ASCII) which moves the active printing position of a printer print-head (or video screen cursor) to the left margin.
CD-ROM Tweet Definition of CD-ROM Like Definition of CD-ROM on Facebook
abbreviation or CD ROM
  1. part (initialism) Compact Disk - (acronym) Read Only Memory. A device that can read CDs (Compact Disks), but can not write to them. Additionally, this is also a class of Compact Disks that are manufactured with the data and shipped, but cannot be written to at all.
central processing unit Tweet Definition of central processing unit Like Definition of central processing unit on Facebook
  1. (computing) The part of a computer that fetches, decodes and executes instructions; attached directly to the memory. Abbreviated: CPU.
Chad Tweet Definition of Chad Like Definition of Chad on Facebook
proper noun 
  1. A country in Central Africa. Official name: Republic of Chad.
  2. (given name, male) from Old English Ceadda, a seventh century saint.
chain Tweet Definition of chain Like Definition of chain on Facebook
  1. A series of interconnected rings or links usually made of metal.
He wore a gold around the neck.
  1. A series of interconnected things.
This led to an unfortunate of events.
  1. A series of stores or businesses with the same brand name.
That of restaurants is expanding into our town.
  1. A number of atoms in a series, which combine to form a molecule.
When examined, the molecular included oxygen and hydrogen.
  1. (surveying) A series of interconnected links of known length, used as a measuring device.
  2. (surveying) A long measuring tape.
  3. A unit of length equal to 22 yards. The length of a commonly used surveying chain. The length of a cricket pitch. Equal to 17.85 metres. Equal to 4 rods.
  1. (transitive) To fasten something with a chain
  2. (intransitive) To link multiple items together
  3. (transitive) To secure someone with fetters
  4. (transitive) To obstruct the mouth of a river etc with a chain
  5. (computing) To relate data items with a chain of pointers; to be chained to another data item
  6. (transitive) To measure a distance using a 66-foot long chain, as in land surveying
channel Tweet Definition of channel Like Definition of channel on Facebook
  1. The physical confine of a river or slough, consisting of a bed and banks.
''The water coming out of the waterwheel created a standing wave in the .
  1. The natural or man-made deeper course through a reef, bar, bay, or any shallow body of water.
A was dredged to allow ocean-going vessels to reach the city.
  1. The navigable part of a river.
We were careful to keep our boat in the .
  1. A narrow body of water between two land masses.
The English Channel lies between France and England.
  1. (electronics) A connection between initiate, initiating and terminate, terminating nodes of a circuit.
The guard-rail provided the between the downed wire and the tree.
  1. (electronics) The narrow conducting portion of a MOSFET transistor.
    1. (communication) The part that connects a data source to a data sink.
    A stretches between them.
    1. (communication) A path for conveying electrical or electromagnetic signals, usually distinguished from other parallel paths.
    We are using one of the 24 channels.
    1. (communication) A single path provided by a transmission medium via physical separation, such as by multipair cable.
    The is created by bonding the signals from these four pairs.
    1. (communication) A single path provided by a transmission medium via spectral or protocol separation, such as by frequency or time-division multiplexing.
    Their call is being carried on 6 of the T-1 line.
    1. (context, broadcasting) A specific radio frequency or band of frequencies, usually in conjunction with a predetermined letter, number, or codeword, and allocated by international agreement.
    KNDD is the at 107.7 MHz in Seattle.
    1. (context, broadcasting) A specific radio frequency or band of frequencies used for transmitting television.
    NBC is on 11 in San Jose.
    1. (context, storage) The portion of a storage medium, such as a track or a band, that is accessible to a given reading or writing station or head.
    This chip in this disk drive is the device.
    1. (context, technic) The way in a turbine pump where the pressure is built up.
    The liquid is pressurized in the lateral .
  1. To direct the flow of something.
We will the traffic to the left with these cones.
  1. To assume the personality of another person, typically a historic figure, in a theatrical or paranormal presentation.
When it is my turn to sing Karaoke, I am going to Ray Charles.
character set Tweet Definition of character set Like Definition of character set on Facebook
  1. (computing) The set of characters encoded by a given character encoding.
  2. (computing) A set of characters together with a character encoding.
Clear Tweet Definition of Clear Like Definition of Clear on Facebook
noun (wikipedia, Clear (Scientology))
  1. (Scientology) An idea state of beingness free of unwanted influences.
click Tweet Definition of click Like Definition of click on Facebook
  1. A brief, sharp, not particularly loud, relatively high-pitched sound produced by the impact something small and hard against something hard, such as by the operation of a switch, a lock or a latch, or a finger pressed against the thumb and then released to strike the hand.
I turned the key, the lock gave a and the door opened.
a of one"s fingers
  1. (context, phonetics) An ingressive sound made by coarticulate, coarticulating a velar or uvular closure with another closure.
  2. Sound made by a dolphin.
  3. The act of operating a switch, etc., so that it clicks.
  4. The act of pressing a button on a computer mouse.
  5. (slang) A kilometre.
The term is used in countries that have adopted the metric system. In USA, it is commonly used in war and science fiction films; for example, the target is 5 clicks north.
  1. The term used to show approval, acceptance, or general agreement.
  1. (transitive) To operate (a switch, etc) so that it makes a click.
  2. (transitive) To press and release (a button on a computer mouse).
  1. (transitive) To select a software item using, usually, but not always, the pressing of a mouse button.
    1. (transitive) To cause to make a click.
    2. (intransitive) To emit a click.
    He bent his fingers back until the joints clicked.
    1. (intransitive) To click the left button of a computer mouse while pointing.
    Click here to go to the next page.
    1. (intransitive) To make sense suddenly.
    Then it clicked - I had been going the wrong way all that time.
    1. (intransitive) To get on well at a first meeting.
    When we met at the party, we just clicked and we"ve been best friends ever since.
clock Tweet Definition of clock Like Definition of clock on Facebook
  1. An instrument used to measure or keep track of time; a non-portable timepiece.
  2. The odometer of a motor vehicle.
This car has over 300,000 miles on the .
  1. (electronics) An electrical signal that synchronizes timing among digital circuit, digital circuits of semiconductor chips or modules.
  1. (transitive) To measure the duration of.
  2. (transitive) To measure the speed of.
He was clocked at 155 miles per hour.
  1. (context, transitive, slang) To hit (someone)
When the boxer let down his guard, his opponent clocked him.
  1. (slang) To take notice of.
Clock the wheels on that car!
  1. (context, UK, slang) To falsify the reading of the odometer of a vehicle.
I don't believe that car has done only 40,000 miles. It's been clocked.
COBOL Tweet Definition of COBOL Like Definition of COBOL on Facebook
noun (or Cobol)
  1. A programming language developed in the late 1950s especially for business applications
code Tweet Definition of code Like Definition of code on Facebook
  1. A very short abbreviation, often with little correlation to the item it represents
You assigned the same "unique" to two intake-categories, causing a database error!
  1. A body of law, sanctioned by legislation, in which the rules of law to be specifically applied by the courts are set forth in systematic form; a compilation of laws by public authority; a digest.
"The collection of laws made by the order of Justinian is sometimes called, by way of eminence, "The Code"." -Wharton
  1. Any system of rules or regulations relating to one subject; as, the medical code, a system of rules for the regulation of the professional conduct of physicians; the naval code, a system of rules for making communications at sea means of signals.
    1. A set of rules for converting information into another form or representation.
  2. (crypto) A cryptographic system using a codebook that converts word, words or phrase, phrases into codeword, codewords.
  3. source code, Source code.
verb (codes, coding, coded)
  1. (computing) To write software programs.
  2. To categorise by assigning identifiers from a schedule, for example CPT coding for medical insurance purposes.
  3. (crypto) To encode.
We should the messages we sent out on usenet.
collate Tweet Definition of collate Like Definition of collate on Facebook
verb (collates, collating, collated)
  1. (transitive) To examine diverse documents et cetera in order to discover similarity, similarities and differences.
  2. (transitive) To assemble something in a logical sequence.
    • 1922, w:Virginia Woolf, Virginia Woolf, w:Jacob's Room, Jacob"s Room, Vintage Classics, paperback edition, page 101
    • : Detest your own age. Build a better one. And to set that on foot read incredibly dull essays upon Marlowe to your friends. For which purpose one must editions in the British Museum.
      1. (transitive) To sort multiple copies of printed documents into sequences of individual page order, one sequence for each copy, especially before binding.
      2. (transitive) To admit a cleric to a benefice.
compile Tweet Definition of compile Like Definition of compile on Facebook
verb (compil, ing)
  1. To put together; to assemble; to make by gathering things from various sources.
Samuel Johnson compiled one of the most influential dictionaries of the English language.
  1. (computing) To use a compiler to process source code and produce executable code.
After I this program I'll run it and see if it works.
compiler Tweet Definition of compiler Like Definition of compiler on Facebook
  1. (computing) A computer program which reads source code and outputs assembly code or executable code
  2. A person who compiles
compute Tweet Definition of compute Like Definition of compute on Facebook
verb (comput, ing)
  1. To reckon or calculate.
Can anyone here compute the square root of 10201?
  1. (context, Colloquial) To make sense.
Does that compute, or do I need to explain further?
computer graphics Tweet Definition of computer graphics Like Definition of computer graphics on Facebook
  1. (computing) the representation and manipulation of pictorial data by a computer
  2. (computing) the various technologies used to create and manipulate such pictorial data
  3. (computing) the images so produced
computer language Tweet Definition of computer language Like Definition of computer language on Facebook
  1. programming language
  2. machine language
  3. A language that is used in association with computers, including programming languages, machine languages, query languages, markup languages etc.
computer literacy Tweet Definition of computer literacy Like Definition of computer literacy on Facebook
  1. (computing) the ability to operate a personal computer and its associated software and hardware, and to understand most of the underlying concepts (but not necessarily the electronics, or a programming language)
computer science Tweet Definition of computer science Like Definition of computer science on Facebook
  1. The study of computers and their computer architecture, architecture, computer language, languages, and applications, in all aspects, as well as the mathematical structures that relate to computers and computation.
computer virus Tweet Definition of computer virus Like Definition of computer virus on Facebook
noun (plural: computer viruses or computer virii (nonstandard))
  1. (context, Computing): A program which can be transmitted between computers via networks (especially the Internet) or removable storage such as CDs, USB drives, floppy disks, etc., generally without the knowledge or consent of the recipient. Results may range from nothing noticeable to deliberate damage to systems and data. The traditional view is that the program must be able to replicate itself to qualify.
computing Tweet Definition of computing Like Definition of computing on Facebook
  1. Action of using a computer.
  2. The study of computers and computer programming.
This course will cover several major fields of .
  1. (present participle of, compute)
configuration Tweet Definition of configuration Like Definition of configuration on Facebook
  1. Form, as depending on the relative disposition of the parts of a thing' shape; figure.
  2. Relative position or aspect of the planets; the face of the horoscope, according to the relative positions of the planets at any time.
  3. The way things are arranged or put together in order to achieve a result.
  4. (context, physics, chemistry) The arrangement of electrons in an atom, molecule, or other physical structure like a crystal.
console Tweet Definition of console Like Definition of console on Facebook
  1. A cabinet designed to stand on the floor.
  2. A cabinet that controls, instruments, and displays are mounted upon.
  3. The keyboard and screen of a computer.
  4. A storage tray or container mounted between the seats of an automobile.
  5. A video game console, especially as opposed to a handheld.
  6. (architecture) An ornamental member jutting out of a wall to carry a superincumbent weight.
verb (consol, ing)
  1. (transitive) To comfort (someone) in a time of grief, disappointment, etc.
control character Tweet Definition of control character Like Definition of control character on Facebook
  1. (computing) A character which does not have a direct visual appearance as a glyph, but rather causes some other display action to occur, such as a transition to a new line. Examples are tab, carriage return, and linefeed (in the ASCII character set, codes 0x09, 0x0d, and 0x0a, respectively).
controller Tweet Definition of controller Like Definition of controller on Facebook
  1. a person who controls something
  2. a person who audits, and manages the financial affairs of a company or government; a comptroller
  3. a mechanism that controls or regulates the operation of a machine, especially a peripheral device in a computer
control panel Tweet Definition of control panel Like Definition of control panel on Facebook
  1. A flat, (usually) vertical surface onto which controls, instruments, and displays are mounted.
convert Tweet Definition of convert Like Definition of convert on Facebook
  1. A person who has converted his or her religion.
They were all converts to Islam.
  1. A person who is now in favour of something that he or she previously opposed or disliked.
I never really liked broccoli before, but now that I've tasted it the way you cook it, I'm a convert!
  1. To transform or change (something) into another form, substance, state, or product.
A kettle converts water into steam.
  1. To change (something) from one use, function, or purpose to another
He converted his garden into a tennis court.
  1. To induce (someone) to adopt a particular religion, faith, or belief
They converted her to Roman Catholicism on her deathbed.
  1. To exchange for something of equal value.
We converted our pounds into euros.
  1. To express (a quantity) in alternative units.
How do you feet into metres?
  1. (rugby football) To score a conversion.
  2. (ten-pin bowling) To score a spare.
counter Tweet Definition of counter Like Definition of counter on Facebook
  1. An object (now especially a small disc) used in counting or keeping count, or as a marker in games, etc.
He rolled a six on the dice, so moved his forward six spaces.
  1. (curling) Any stone lying closer to the center than any of the opponent's stones.
  2. A table or board on which money is counted and over which business is transacted; a shop tabletop on which goods are examined, weighed or measured.
He put his money on the , and the shopkeeper put it in the till.
  1. One who counts, or reckons up; a reckoner.
He's only 16 months, but is already a good - he can count to 100.
  1. A telltale; a contrivance attached to an engine, printing press, or other machine, for the purpose of counting the revolutions or the pulsations.
  2. (historical) The prison attached to a city court; a Counter.
  3. (context, grammar) a class of word used along with numbers to count objects and events, typically mass nouns. Although rare and optional in English (e.g. "20 head of cattle"), they are numerous and required in Chinese, Japanese, and Korean.
  4. In a kitchen, a surface, often built into the wall and above a cabinet, whereon various food preparations take place.
  1. To contradict, oppose.
  2. (context, boxing) To return a blow while receiving one, as in boxing.
    • "His left hand countered provokingly." -C. Kingsley.
      1. To take action in response to; to respond.
  1. contrary, Contrary; opposite; contrasted; opposed; adverse; antagonistic.
His carrying a knife was to my plan.
  1. Contrary, in opposition; in an opposite direction.
"Running to all the rules of virtue." -Locks.
courseware Tweet Definition of courseware Like Definition of courseware on Facebook
  1. (computing) educational software
CPS Tweet Definition of CPS Like Definition of CPS on Facebook
  1. Child Protective Services
  2. Current Population Survey
  3. Clean Plate Syndrome
  4. Crown Prosecution Service
CPU Tweet Definition of CPU Like Definition of CPU on Facebook
  1. (computing) central processing unit
crash Tweet Definition of crash Like Definition of crash on Facebook
noun (crashes)
  1. An automobile, airplane, or other vehicle accident.
  2. A computer malfunction that is caused by faulty software, and makes the system either partially or totally inoperable.
  3. A loud sound as made for example by cymbals.
  4. A comedown of a drug.
  5. A herd of rhinoceroses.
    • (post, 1991) Patrick F. McManus?, "Nincompoopery and Other Group Terms", in The Grasshopper Trap, Henry Holt and Company, ISBN 0-8050-0111-5, page 103,
    • : One of my favorites among the terms of groups of creatures is a ' of rhinoceros. I can imagine an African guide saying to his client, "Shoot, dammit, shoot! Here comes the whole bloody of rhinoceros!"
    • : " Personally, I think I"d just as soon come across a of rhinoceros as a knot of toad.
    • 1998, E. Melanie Watt, Black Rhinos, page 19
    • : The largest group of black rhinos reported was made up of 13 individuals. A group of rhinos is called a .
    • 1999, Edward Osborne Wilson, The Diversity of Life, page 126
    • : Out in the water a of rhinoceros-like animals browse belly deep through a bed of aquatic plants.
    • 2003', Claude Herve-Bazin, Judith Farr Kenya and Tanzania'', page 23
    • : The of rhinoceros at Tsavo now numbers almost 200.
verb (crash, es)
  1. (intransitive) to collide with something destructively
  2. (intransitive) to make informal temporary living arrangments
Hey dude, can I at your pad?
  1. (intransitive) (of a computer program) to terminate extraordinary, extraordinarily
  2. (transitive) to severely damage or destroy something by causing it to collide with something else
  3. (transitive)(slang) to turn up at or join a social event without having been invited
  1. quick, fast, intensive
crash course
CRT Tweet Definition of CRT Like Definition of CRT on Facebook
  1. Cathode ray tube
cursor Tweet Definition of cursor Like Definition of cursor on Facebook
noun (plural cursors)
  1. A moving icon or other representation of the position of the pointing device.
  2. An indicator, often a blinking line or bar, indicating where the next insertion or other edit will take place. Also referred to as "the caret".
  3. (databases) A reference to a row of data in a table, which moves from row to row as data is retrieved by way of it.
cybernetics Tweet Definition of cybernetics Like Definition of cybernetics on Facebook
  1. The theory/science of communication and control in the animal and the machine.
  2. The art/study of governing, controlling processes and communication.
  3. Technology related to computers and Internet.
cylinder Tweet Definition of cylinder Like Definition of cylinder on Facebook
  1. (geometry) A surface created by projecting a closed two-dimensional curve along an axis intersecting the plane of the curve.
When the two-dimensional curve is a circle, the cylinder is called a circular cylinder. When the axis is perpendicular to the plane of the curve, the cylinder is called a right cylinder. In non-mathematical usage, both 'right and circular are usually implied.
  1. (geometry) A solid figure bounded by a cylinder and two parallel planes intersecting the cylinder.
  2. Any object in the form of a circular cylinder.
    • 1898 " w:H. G. Wells, H. G. Wells, The War of the Worlds Ch.4
    • :A big greyish rounded bulk, the size, perhaps, of a bear, was rising slowly and painfully out of the .
      1. A cylindrical cavity or chamber in a mechanism, such as the counterpart to a piston found in a piston-driven engine.
      2. A container in the form of a cylinder with rounded ends for storing pressurized gas.
      3. An early form of phonograph recording, made on a wax cylinder.

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