sea urchin(redirected from Arbacia)
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Related to Arbacia: Crangon
Any of various echinoderms of the class Echinoidea, having a soft body enclosed in a rounded, radially symmetrical, calcareous skeleton covered with long spines.
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 echinoderm of the class Echinoidea, such as Echinus esculentus (edible sea urchin), typically having a globular body enclosed in a rigid spiny test and occurring in shallow marine waters
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
any echinoderm of the class Echinoidea, having a somewhat globular or discoid form and a shell composed of many calcareous plates covered with projecting spines.
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 invertebrate sea animals having a round body covered by a shell with movable spines. Sea urchins are related to starfish.
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 urchin - shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells|
echinoderm - marine invertebrates with tube feet and five-part radially symmetrical bodies
sand dollar - flattened disklike sea urchins that live on sandy bottoms
heart urchin - sea urchin having a heart-shaped body in a rigid spiny shell
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hérisson de mer
sea urchinn → riccio di mare
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
sea urchinn erizo de mar
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.