In certain polyps (especially octocorallian polyps): the proximal part of the stem or calyx, sometimes stiffened, which is fused with that of neighbouring polyps and into which the anthocodia may be retracted.
Origin
Early 20th century. From antho- + stele.
Definition of anthostele in US English:
anthostele
nounˈanθə(ʊ)ˌstiːl
Zoology
In certain polyps (especially octocorallian polyps): the proximal part of the stem or calyx, sometimes stiffened, which is fused with that of neighbouring polyps and into which the anthocodia may be retracted.