Definition of "scyphozoan" []

• 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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.