||Tra`chy*me*du"sæ (?), n. pl. [NL.,
fr.Gr. &?; rough + medusa.] (Zoöl.) A division of
acalephs in which the development is direct from the eggs, without a
hydroid stage. Some of the species are parasitic on other
medusæ.
||Tra`chy*me*du"sæ (?), n. pl. [NL.,
fr.Gr. &?; rough + medusa.] (Zoöl.) A division of
acalephs in which the development is direct from the eggs, without a
hydroid stage. Some of the species are parasitic on other
medusæ.