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[met-uh-zoh-uh] /ˌmɛt əˈzoʊ ə/
a zoological group comprising the multicellular animals.
Origin of Metazoa
From New Latin, dating back to 1870-75; See origin at meta-, -zoa
Related forms
metazoan, adjective, noun
metazoic, metazoal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for metazoan
Historical Examples
  • In the metazoan body each cell performs, in co-operation with many other similar cells, some one special function or process.

British Dictionary definitions for metazoan


any multicellular animal of the group Metazoa: includes all animals except sponges
of, relating to, or belonging to the Metazoa
Word Origin
C19: from New Latin Metazoa; see meta-, -zoa
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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metazoan in Medicine

Metazoa Met·a·zo·a (mět'ə-zō'ə)
A subdivision of the animal kingdom that includes all multicellular animal organisms having cells that are differentiated and form tissues and organs.

met'a·zo'an adj. & n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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metazoan in Science
  1. Any of the animals belonging to the subkingdom Metazoa, having a body made up of differentiated cells arranged in tissues and organs. All multicellular animals besides sponges are metazoans.

  2. A multicellular animal. No longer in scientific use.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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