- active
- 1
adjective
1 DOING THINGS always doing things or ready to do things, especially physical activities: We had an active holiday, sailing, swimming and water skiing. | She may be over 80, but she's still very active!2 IN AN ORGANIZATION involved in an organization, activity etc and always busy doing things to help it: active member: an active member of the local Historical Society | be active in (doing) sth: He's very active in local politics. | She's been active in raising money for the new church buildings.3 active efforts/discussions etc efforts, attempts etc to do something, solve a problem etc, that are made with continuous energy and determination: Active efforts are being made to reach a settlement.4 ELECTRICAL SYSTEM technical operating in the way it is supposed to: The alarm becomes active when the switch is turned on.5 MILITARYa) on active service a soldier etc who is on active service is fighting in a warb) on active duty AmE employed by the army etc, as opposed to being in the reserves reserve 2 (6)6 VOLCANO likely to explode and pour out fire7 GRAMMAR technical if a verb or sentence is active, the person or thing doing the action is the subject 1 (5) In `The boy kicked the ball', the verb `kick' is active.-compare passive 1 (2)8 CHEMICAL technical producing a reaction in a substance or with another chemical- actively adverb: The two sides are actively engaged in discussions. 2 noun the active/the active voice technical the active form of a verb - compare passive 2
Longman dictionary of contemporary English. 2004.