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[swim-uh-ret] /ˈswɪm əˌrɛt/
(in many crustaceans) one of a number of abdominal limbs or appendages, usually adapted for swimming and for carrying eggs, as distinguished from other limbs adapted for walking or seizing.
Origin of swimmeret
1830-40; swimmer + -et Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for swimmeret


any of the small paired appendages on the abdomen of crustaceans, used chiefly in locomotion and reproduction Also called pleopod
Word Origin
C19: from swim + -er1 + -et
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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Word Origin and History for swimmeret

1840, from agent noun from swim (v.) + diminutive suffix. Related: Swimmerets.

Online Etymology Dictionary, © 2010 Douglas Harper
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swimmeret in Science
One of the paired abdominal appendages of certain aquatic crustaceans, such as shrimp, lobsters, and isopods. Swimmerets are normally found on the first five abdominal segments and typically terminate in paired oarlike branches. They function primarily for carrying the eggs in females and are usually adapted for swimming. Also called pleopod.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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