Meaning of ACTINIDE

Pronunciation:			'akti`nId
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WordNet Dictionary
	Definition:		[n]  any of a series of radioactive elements with atomic numbers 89 through 103
	Synonyms:		actinoid, actinon
	See Also:		group, grouping
Biology Dictionary
	Definition:		Any element in the periodic table which has an atomic number between 89 and 103.