Part of speech: Adjective
(of sewage) treated with aeration and bacteria to aid decomposition
Part of speech: Adjective
(of e.g. a molecule) made reactive or more reactive
Part of speech: Adjective
rendered active; e.g. rendered radioactive or luminescent or photosensitive or conductive
Part of speech: Adjective
(military) set up and placed on active assignment
Example: a newly activated unit
Spark, Aerate, Activate, Trigger off, Set off