- (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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any of the small paired appendages on the abdomen of crustaceans, used chiefly in locomotion and reproductionAlso called: pleopod
C19: from swim + -er 1 + -et
Word Origin and History for swimmeret
1840, from agent noun from swim (v.) + diminutive suffix. Related: Swimmerets.
Online Etymology Dictionary, © 2010 Douglas Harper
- 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.