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Any of a series of radioactive elements with atomic numbers 89 through 103
Answer for the clue "Any of a series of radioactive elements with atomic numbers 89 through 103 ", 7 letters:
actinon
Word definitions for actinon in dictionaries
Wiktionary
Word definitions in Wiktionary
n. 1 Any of the radioactive isotopes of radon 2 Any radioactive isotope of an actinide
WordNet
Word definitions in WordNet
n. any of a series of radioactive elements with atomic numbers 89 through 103 [syn: actinoid , actinide ]