Activate

['æktɪveɪt] or ['æktə'vet]

(verb.) make active or more active; 'activate an old file'.

(verb.) make (substances) radioactive.

(verb.) aerate (sewage) so as to favor the growth of organisms that decompose organic matter.

(verb.) make more adsorptive; 'activate a metal'.

Inputed by Leila--From WordNet

(v. t.) To make active.

Editor: Xenia

v.t. (Bacon) to make active:—pr.p. ac′tivāting; pa.p. ac′tivāted.

Checker: Nathan