actinoid, a.
(ˈæktɪnɔɪd)
[f. actino- + -ειδ-ής -form.]
Having the form of rays, radiated; said of a division of Zoophytes or Polypes, having the internal cavity divided by radiated partitions, as in the coral zoophytes.
| 1848 Dana Zoophytes iv. §37, 43 Other actinoid polyps. 1860 Actinolog. Brit. Introd. 22 The cnidæ, in the Actinoid Zoophytes, are not confined to one organ or set of organs. |