ACTINOSTOME
Ac*tin"o*stome, n. Etym: [Gr. (Zoöl.)
Defn: The mouth or anterior opening of a coelenterate animal.
ACTINOTROCHA
Ac`ti*not"ro*cha, n. pl. Etym: [NL.; Gr. (Zoöl.)
Defn: A peculiar larval form of Phoronis, a genus of marine worms, having a circle of ciliated tentacles.
ACTINOZOA
Ac"ti*no*zo"a, n. pl. Etym: [Gr. (Zoöl.)
Defn: A group of Coelenterata, comprising the Anthozoa Ctenophora.
The sea anemone, or actinia, is a familiar example.
ACTINOZOAL
Ac`ti*no*zo"al, a. (Zoöl.)
Defn: Of or pertaining to the Actinozoa.
ACTINOZOON; ACTINOZOOEN
Ac"ti*no*zo"ön, n. (Zoöl.)
Defn: One of the Actinozoa.