The Collaborative International Dictionary
Actinomere
Actinomere \Ac*tin"o*mere\, n. [Gr. ?, ?, ray + ? part.] (Zo["o]l.) One of the radial segments composing the body of one of the C[oe]lenterata.
Wiktionary
actinomere
n. (context zoology English) One of the radial segments making up the body of one of the Cœlenterata.