from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A shape resembling a jellyfish.
- n. A jellyfish.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. jellyfish
- adj. Having the shape of a jellyfish
from the GNU version of the Collaborative International Dictionary of English
- adj. Like a medusa; having the fundamental structure of a medusa, but without a locomotive disk; -- said of the sessile gonophores of hydroids.
from The Century Dictionary and Cyclopedia
- Like a medusa; resembling a medusa in form or function; medusiform: as, a medusoid bud; the medusoid organization. Sometimes acalephoid.
- n. The medusiform generative bud or receptacle of the reproductive elements of a hydrozoan, whether it becomes detached or not.
- n. Loosely, any medusa, medusidan, or medusoid organism.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. one of two forms that coelenterates take: it is the free-swimming sexual phase in the life cycle of a coelenterate; in this phase it has a gelatinous umbrella-shaped body and tentacles
- adj. relating to or resembling a medusa
Sorry, no etymologies found.
Furnished with these facts, it is not difficult to recognize true beroidal forms in the embryos of sea-urchins and star-fishes, published by Muller in his beautiful plates, and thus to trace the medusoid origin of the echinoderms, as the polypoid origin of the medusae has already been recognized.
Even the degeneration of a medusoid from a free-swimming animal to a mere brood-sac (gonophore) is not sudden and saltatory, but occurs by imperceptible modifications throughout hundreds of years, as we can learn from the numerous stages of the process of degeneration persisting at the same time in different species.
Muller in his beautiful plates, and thus to trace the medusoid origin of the echinoderms, as the polypoid origin of the medusae has already been recognized.
Their medusoid bodies are bell-shaped, but some species lack the long, stinging tentacles frequently associated with jellyfish.
Main Characteristics Radial symmetrical include the hydroids, jellyfish, anemones, and corals have tentacles with stinging cells in their tips which are used to capture and subdue prey one of two basic body types, polypoid or medusoid.