1. (a.) Like a medusa; having the fundamental structure of a medusa, but without a locomotive disk; -- said of the sessile gonophores of hydroids.
2. (n.) A sessile gonophore.
| Medusoid 1. (a.) Like a medusa; having the fundamental structure of a medusa, but without a locomotive disk; -- said of the sessile gonophores of hydroids. 2. (n.) A sessile gonophore. | |