Actinoid — synonyms, definition

1. actinoid (Adjective)

actinoid (Adjective) — Having a radial form. ex. "starfish are actinoid--that is, they are radially symmetrical"

2. actinoid (Noun)

actinide actinon

actinoid (Noun) — Any of a series of radioactive elements with atomic numbers 89 through 103.

group grouping