actinoid

ac·ti·noid

A0068900 (ăk′tə-noid′)n. See actinide.

actinoid

(ˈæktɪˌnɔɪd) adj (Zoology) having a radiate form, as a sea anemone or starfish

Thesaurus

Noun

1.actinoid - any of a series of radioactive elements with atomic numbers 89 through 103actinide, actinongroup, grouping - any number of entities (members) considered as a unit

Adj.

1.actinoid - having a radial form; "starfish are actinoid--that is, they are radially symmetrical"actinomorphic, actinomorphous - capable of division into symmetrical halves by any longitudinal plane passing through the axis

Translations