noun

1. A person or thing that is acting or capable of acting.

adjective (WikiSaurus?-link, active)

1. Having the power or quality of acting; causing change; communicating action or motion; acting; — opposed to passive, that receives; as, certain active principles; the powers of the mind.
2. Quick in physical movement; of an agile and vigorous body; nimble; as, an active child or animal.
3. In action; actually proceeding; working; in force; — opposed to quiescent, dormant, or extinct.

active laws

active hostilities

an active volcano

1. Given to action; constantly engaged in action; energetic; diligent; busy; — opposed to dull, sluggish, indolent, or inert; as, an active man of business; active mind; active zeal.
2. Requiring or implying action or exertion; — opposed to sedentary or to tranquil; as, active employment or service; active scenes.
3. Given to action rather than contemplation; practical; operative; — opposed to speculative or theoretical; as, an active rather than a speculative statesman.
4. Brisk; lively; as, an active demand for corn.
5. Implying or producing rapid action.

an active disease

an active remedy

1. (grammar)

1. Applied to a form of the verb; — opposed to passive. See active voice.
   
2. Applied to verbs which assert that the subject acts upon or affects something else; transitive.
   
3. Applied to all verbs that express action as distinct from mere existence or state.
   
4. (italbrac, gay sexual slang)
   
5. (italbrac, of a homosexual man) enjoying a role in anal sex in which he penetrates, rather than being penetrated by his partner
   
6. such a role in anal sex

noun

1. Something that actuates something else, especially a mechanism that causes a device to be switched on or off

1. • The mind is the of the body
     1. (computing) The mechanism that moves the head assembly on a disk drive
     2. (electrical) A relay that controls the flow of electricity

verb Transitive verb:

1. To form in line; to fall into line.
   
2. To adjust or form to a line; to range or form in line; to bring into line
   
3. (intransitive) To adhere oneself with a group or a way of thinking

initialism

1. (Sometimes lower case) From Latin ante meridiem, meaning "before noon (12:00)".

1. • See also: A.M.
     1. Amplitude Modulation
   • Contrasted with FM
     1. Assembly Member, a title similar to MP, placed after the name of a Member of the Welsh National Assembly.
     2. Artium Magister or Master of Arts

noun

1. The opposite of a cathode, an anode.
   
2. The target at which electrons from the cathode in a CRT or x-ray tube are directed.

verb (attenuat, ing)

1. (transitive) To reduce in size, force, value, amount, or degree
2. (transitive) To weaken
3. (transitive) To rarefy
4. (transitive) To reduce the virulence of a bacteria or virus
5. (transitive) (electronics) To reduce the amplitude of an electrical signal

adjective

1. (botany, of leaves) Gradually tapering into a petiole-like extension toward the base.