1
: any of an order (Rodentia) of relatively small gnawing mammals (such as a mouse, squirrel, or beaver) that have in both jaws a single pair of incisors with a chisel-shaped edge
2
: a small mammal (such as a rabbit or a shrew) other than a true rodent
rodent adjective

Examples of rodent in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Inspectors also pointed to a large gap along the bottom of the bakery’s street-side double doors that could allow more insects or rodents to get inside. Zareen Syed, Chicago Tribune, 17 July 2026 Approximately 20 rodent droppings were found in the lower storage area. Veronica Fernandez-Alvarado july 17, Sacbee.com, 17 July 2026 The inspector noticed two old rodent droppings, but the issue was fixed at the time of the inspection, according to the report. Harriet Ramos, Fort Worth Star-Telegram, 17 July 2026 Roaches, rodents — dead and alive —and an appearance by PETA are all in this week’s edition of The Sick and Shut Down List, South Florida restaurants that failed state inspection. David J. Neal, Miami Herald, 17 July 2026 See All Example Sentences for rodent

Word History

Etymology

borrowed from the base of New Latin Rodentia, order name, from neuter plural of Latin rōdent-, rōdens, present participle of rōdere "to gnaw, nibble, eat away," perhaps going back to Indo-European *Hr̥h3d-, *Hreh3d-, whence also Hittite ardu- "saw (off)," Sanskrit rádati "(s/he) bites, gnaws, cuts, opens"

First Known Use

1830, in the meaning defined at sense 1

Time Traveler
The first known use of rodent was in 1830

Browse Nearby Words

Cite this Entry

“Rodent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rodent. Accessed 19 Jul. 2026.

Kids Definition

: any of an order of fairly small mammals (as mice, squirrels, or beavers) that have sharp front teeth used for gnawing
rodent adjective
Etymology

derived from Latin rodent-, rodens, a form of rodere "to gnaw" — related to erode

Medical Definition

: any mammal (as a mouse or rat) of the order Rodentia
rodent adjective

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