Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. Simple past tense and past participle of activate.

from the GNU version of the Collaborative International Dictionary of English

  • adj. treated with aeration and bacteria to aid decomposition; -- of sewage.
  • adj. made reactive or more reactive; -- of e.g. a molecule.
  • adj. rendered active; -- as e.g. radioactive or luminescent or photosensitive or conductive.
  • adj. set up and placed on active assignment.

from The Century Dictionary and Cyclopedia

  • In physics, in a state or condition of acquired radioactivity; ionized.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. (of e.g. a molecule) made reactive or more reactive
  • adj. (military) set up and placed on active assignment
  • adj. (of sewage) treated with aeration and bacteria to aid decomposition
  • adj. rendered active; e.g. rendered radioactive or luminescent or photosensitive or conductive

Etymologies

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