from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various marine coelenterates of the class Scyphozoa, which includes the large jellyfishes, characterized by the absence of a velum and by a polyp stage that is very small or lacking entirely.
- adj. Of or belonging to the class Scyphozoa.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any true jellyfish of the class Scyphozoa
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle
From New Latin Scyphozōa, class name : Greek skuphos, cup + New Latin -zōa, pl. of -zōon, -zoon.(American Heritage® Dictionary of the English Language, Fourth Edition)