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Definition of Actinoid
1. Noun. Any of a series of radioactive elements with atomic numbers 89 through 103.
2. Adjective. Having a radial form. "Starfish are actinoid--that is, they are radially symmetrical"
Definition of Actinoid
1. a. Having the form of rays; radiated, as an actinia.
Definition of Actinoid
1. Noun. (inorganic chemistry) actinide ¹
2. Adjective. Having the form of rays; radiated, as in the species of the family Actiniidae. ¹
¹ Source: wiktionary.com
Definition of Actinoid
1. an actinide [n -S] - See also: actinide
Medical Definition of Actinoid
1. Having the form of rays; radiated, as an actinia. Origin: Gr, ray. Source: Websters Dictionary (01 Mar 1998)
Lexicographical Neighbors of Actinoid
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