from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Making active and effective.
  • n. The process of making a radioisotope by bombarding a stable element with neutrons or protons.

from the GNU version of the Collaborative International Dictionary of English

  • n. the process of making active.
  • n. making active and effective (as a bomb).

from The Century Dictionary and Cyclopedia

  • n. The act of rendering active or the state of being activated; specifically, in physics, the process or method of producing radioactivity in a body by exposure to the influence of a radioactive substance or otherwise; the state or condition of being radioactive; ionization.

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

  • n. stimulation of activity in an organism or chemical
  • n. the activity of causing to have energy and be active
  • n. making active and effective (as a bomb)


Sorry, no etymologies found.



Log in or sign up to get involved in the conversation. It's quick and easy.