Definition of anthostele in US English:

anthostele

noun

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.

Origin

Early 20th century. From antho- + stele.

Pronunciation

anthostele

/ˈanθə(ʊ)ˌstiːl/