Find the word definition

The Collaborative International Dictionary
gonangium

Gonotheca \Gon`o*the"ca\, n.; pl. Gonothec?. [NL., fr. Gr. ? offspring + ? box.] (Zo["o]l.) A capsule developed on certain hydroids ( Thecaphora), inclosing the blastostyle upon which the medusoid buds or gonophores are developed; -- called also gonangium, and teleophore. See Hydroidea, and Illust. of Campanularian.

Wiktionary
gonangium

n. A capsule which encloses the blastostyle of some hydroids