oldfield mouse

noun

Peromyscus polionotus, a nocturnal rodent in the family Cricetidae, found in the southeastern United States.

Similar
beach mouseoldfield deermouse

Meanings

nounoldfield mouse (plural oldfield mice)

plural oldfield mice

  1. Peromyscus polionotus, a nocturnal rodent in the family Cricetidae, found in the southeastern United States.

    In the wild, deer mice and oldfield mice never interbreed.

    2017 April 19, Carl Zimmer, “Why Are Some Mice (and People) Monogamous? A Study Points to Genes”, in The New York Times

    Synonyms: beach mouse, oldfield deermouse

  2. Thomasomys, a genus of rodent found in South America.

Synonyms & antonyms

nounPeromyscus polionotus, a nocturnal rodent in the family Cricetidae, found in the southeastern United States.

Similar
beach mouseoldfield deermouse

Origin

* (Peromyscus polionotus): ? * (Thomasomys): Named for Michael Rogers Oldfield Thomas (1858 – 1929), a British zoologist.

Full word history & related roots →
Cite this entry
APA

oldfield mouse. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/oldfield%20mouse

MLA

“oldfield mouse.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/oldfield%20mouse. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “oldfield mouse,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/oldfield%20mouse.

Source: oldfield mouse on Wiktionary, CC BY-SA 4.0.