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1. Any of various highly colorful marine gastropods of the suborder Nudibranchia, lacking a shell and gills but having fringelike projections that serve as respiratory organs. Also called nudibranch.
2. Any of various other marine gastropods that lack a shell or have a reduced shell.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Animals) any of various shell-less marine gastropod molluscs, esp those of the order Nudibranchia. See nudibranch
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Any of various colorful ocean mollusks that lack a shell and gills but have fringe-like projections that serve as respiratory organs. Also called nudibranch.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||sea slug - any of various marine gastropods of the suborder Nudibranchia having a shell-less and often beautifully colored body|
gastropod, univalve - a class of mollusks typically having a one-piece coiled shell and flattened muscular foot with a head bearing stalked eyes
Nudibranchia, order Nudibranchia - comprising numerous marine gastropod mollusks lacking a shell in the adult state and usually having a body like a slug
Hermissenda crassicornis - a kind of sea slug
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