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actinon: Meaning and Definition of

ac•ti•non

Pronunciation: (ak'tu-non"), [key]
— n. Chem.
  1. a chemically inert, gaseous, short-lived isotope of radon that is a member of the actinium series. Symbol: An; at. no.: 86; at. wt.: 219. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
actinomycosis actinopod
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