any freshwater, marine, or terrestrial crustacean of the order or suborder Isopoda, having seven pairs of legs typically adapted for crawling, and a dorsoventrally flattened body, and including wood lice, several aquatic parasites of crabs and shrimps, and numerous swimming or bottom-dwelling species.
of, pertaining to, or characteristic of the Isopoda.
having the feet all alike, or similar in character.

1825–35; < Neo-Latin Isopoda. See iso-, -pod

isopodan [ahy-sop-uh-dn] , adjective, noun
isopodous, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
isopod (ˈaɪsəʊˌpɒd)
1.  any crustacean of the order Isopoda, including woodlice and pill bugs, in which the body is flattened dorsoventrally
2.  of, relating to, or belonging to the Isopoda

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
isopod   (ī'sə-pŏd')  Pronunciation Key 
Any of numerous mostly small crustaceans of the order Isopoda, characterized by a flattened body and a series of wide, armorlike plates covering the back. Isopods include the sow bugs, pill bugs, and gribbles.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


any member of the order Isopoda (class Crustacea), a group of diverse, widely occurring forms including marine, freshwater, and terrestrial species. Most are free-living, but a number of marine species are parasitic on other animals. They are usually inconspicuous. Most of the 4,000 species, which include the pill bug, the sow bug, and the gribble (qq.v.), are from 0.7 to 35 mm (0.28 to 1.4 inches) long; however, Bathynomus giganteus, a marine species of the Caribbean Sea, grows to 35 cm (14 inches)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The blue part of the image is an isopod-a small crustacean.
Subterranean aquatic species exhibit similar biodiversity, particularly among the crustacean amphipod and isopod groups.
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