9 Grammatical Pitfalls


[rohd-nt] /ˈroʊd nt/
belonging or pertaining to the gnawing or nibbling mammals of the order Rodentia, including the mice, squirrels, beavers, etc.
a rodent mammal.
Origin of rodent
1825-35; < New Latin Rodentia Rodentia
Related forms
rodentlike, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for rodents
  • She built on that research by testing the prediction in rodents.
  • The eyes of moles and of some burrowing rodents are rudimentary in size, and in some cases are quite covered by skin and fur.
  • Portraits of the buck-toothed, retiring rodents are everywhere at the show.
  • The subjects in these drawings are usually rodents and birds.
  • Burrowing owls mainly eat large insects, small rodents and frogs.
  • When they were able to remove senescent cells from mice, the little rodents were revitalized.
  • This, in turn, should help explain complex social interactions seen in both rodents and people.
  • Traders and rodents also seem to have something in common.
  • What is bad news for rodents, though, could be good news for primates.
  • rodents fed diets containing supplements of both types of chemical developed tumours in various organs.
British Dictionary definitions for rodents


  1. any of the relatively small placental mammals that constitute the order Rodentia, having constantly growing incisor teeth specialized for gnawing. The group includes porcupines, rats, mice, squirrels, marmots, etc
  2. (as modifier): rodent characteristics
Derived Forms
rodent-like, adjective
Word Origin
C19: from Latin rōdere to gnaw, corrode
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 rodents



1835 (as an adjective 1833), from Modern Latin Rodentia, the order name, from Latin rodentem (nominative rodens), present participle of rodere "to gnaw, eat away," from PIE root *red- "to scrape, scratch, gnaw" (cf. Sanskrit radati "scrapes, gnaws," radanah "tooth;" Latin radere "to scrape;" Welsh rhathu "scrape, polish"). Uncertain connection to Old English rætt (see rat (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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rodents in Science
Any of various very numerous, mostly small mammals of the order Rodentia, having large front teeth used for gnawing. The teeth grow throughout the animal's life, and are kept from getting too long by gnawing. Rodents make up about half the living species of mammals, and include rats, mice, beavers, squirrels, lemmings, shrews, and hamsters.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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