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All Words Glossary

Glossary of Computing Terms
beginning with letter O
Browse the Computing Glossary
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OCR Tweet Definition of OCR Like Definition of OCR on Facebook
initialism
  1. Optical Character Recognition
  2. Oxford, Cambridge & RSA (examinations (board))
  3. Office for Civil Rights (US)
octal Tweet Definition of octal Like Definition of octal on Facebook
noun (uncountable)
  1. (arithmetic, computing, uncountable) The number system that uses the eight digits 0, 1, 2, 3, 4, 5, 6, 7.
adjective (no comparative or superlative)
  1. (arithmetic, computing) Concerning numbers expressed in octal or mathematical calculations performed using octal.
off-line Tweet Definition of off-line Like Definition of off-line on Facebook
adjective
  1. Alternative spelling of offline.
on-line Tweet Definition of on-line Like Definition of on-line on Facebook
adjective
  1. Alternative spelling of online
adverb
  1. Alternative spelling of online
operating system Tweet Definition of operating system Like Definition of operating system on Facebook
noun
  1. (software) Software that controls a computer and acts as a layer between the hardware and the applications and users. (eg. Linux, Windows, Mac OS X, Unix)
  2. (software) Software that provides a simple environment for programmers and end users to work more efficiently (shell, command interpreter)
optical character recognition Tweet Definition of optical character recognition Like Definition of optical character recognition on Facebook
noun
  1. The electronic identification and digital encoding of printed or handwritten characters by means of an optical scanner and specialized software
optimize Tweet Definition of optimize Like Definition of optimize on Facebook
verb (optimiz, es)
  1. (intransitive) To act optimistically or as an optimist.
  2. (intransitive) To become optimal.
  3. (transitive) To make (something) optimal.
  4. (transitive) To make (something) more efficient, such as a computer program.
OR Tweet Definition of OR Like Definition of OR on Facebook
noun
  1. (logic) The binary operator inclusive or, true if one at least one of two inputs is true. In infix notation, it has values
(0 OR 0) = 0<br>
(0 OR 1) = 1<br>
(1 OR 0) = 1<br>
(1 OR 1) = 1<br>
abbreviation
  1. Oregon, a state of the United States of America.
initialism
  1. operating room
  2. operations research
OS Tweet Definition of OS Like Definition of OS on Facebook
initialism
  1. Ordnance Survey
  2. operating system
  3. oculus sinister () - left eye
  4. outsize
output Tweet Definition of output Like Definition of output on Facebook
noun
  1. production; quantity produced, created, or completed
The factory increased its this year.
  1. (computers) data sent out of the computer, as to the screen, printer, or other device
a six page
verb (outputs, outputting, output)
  1. to produce, create, or complete
We 1400 units last year.
  1. (computers) to send data to a monitor, printer, or other output device
When I hit enter, it outputs a bunch of numbers.
overlay Tweet Definition of overlay Like Definition of overlay on Facebook
noun
  1. (printing) A piece of paper pasted upon the tympan sheet to improve the impression by making it stronger at a particular place.
  2. (betting) Odds which are set higher than expected or warranted. Favorable odds.
  3. (horse racing) A horse going off at higher odds than it appears to warrant, based on its past performances.
verb (overlays, overlaying, overlaid)
  1. (transitive) To lay, or spread, something over or across; to cover.
  2. To overwhelm; to press excessively upon.
  3. (transitive) To smother with a close covering, or by lying upon.
  4. (transitive) (printing) To put an overlay
  5. Noun, overlay on.

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