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Related to swimmeret: uropods
One of the paired abdominal appendages of many aquatic crustaceans, such as shrimp and lobsters, that are used for swimming and in females for carrying eggs. Also called pleopod.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
swimmeretany of the small paired appendages on the abdomen of crustaceans, used for locomotion or reproduction.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005