The Collaborative International Dictionary
Actinostome
Actinostome \Ac*tin"o*stome\, n. [Gr. ?, ?, a ray + ? mouth.] (Zo["o]l.) The mouth or anterior opening of a c[oe]lenterate animal. [1913 Webster] ||
Wiktionary
actinostome
n. (context zoology English) The mouth or anterior opening of a coelenterate animal.