rodent

noun

ro·​dent ˈrō-dᵊnt 

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

Additionally, six facilities were cited for health food violations including old rodent droppings on the floor near chicken packaging and shelled eggs stored improperly. — Sacbee.com, 2 Oct. 2026

The Gaboon viper, which has two hornlike projections on its snout, feeds mainly on rodents and ground-dwelling birds. — Fedor Zarkhin, Los Angeles Times, 29 Sep. 2026

In the weeks after, more than 85 million pounds of rotting food being kept at the cold storage facility began to rot, leaving a putrid stench lingering over the area that led to infestations of rats, flies and other rodents. — Dean Fioresi, CBS News, 29 Sep. 2026

These rodents also performed better on standard memory tests than their untreated counterparts, even though both groups had similar levels of tau. — Amanda Erickson, STAT, 29 Sep. 2026

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

Phrases Containing rodent

• rodent ulcer

Kids Definition

rodent

noun

ro·​dent ˈrōd-ᵊnt 

: 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

rodent

noun

ro·​dent ˈrōd-ᵊnt 

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

rodent adjective