The Collaborative International Dictionary
Blastostyle
Blastostyle \Blas"to*style\, n. [Gr. blasto`s sprout, bud + ? a pillar.] (Zo["o]l.) In certain hydroids, an imperfect zooid, whose special function is to produce medusoid buds. See Hydroidea, and Athecata.
Wiktionary
blastostyle
n. (context zoology English) In certain hydroids, an imperfect zooid whose special function is to produce medusoid buds.