mammal.
A vertebrate animal of the class Mammalia, characterized by being warm-blooded, having fur or hair and producing milk with which to feed their young.
Meaning & usage
A vertebrate animal of the class Mammalia, characterized by being warm-blooded, having fur or hair and producing milk with which to feed their young.
A vertebrate with three bones in the inner ear and one in the jaw.
Where this word comes from
Etymology tree Latin mamma Proto-Indo-European *h₂el- Proto-Indo-European *-is Proto-Indo-European *h₂élisder.? Proto-Italic *-ālis Latin -ālis Latin mammālisnom. Latin mammalbor. English mammal Borrowed from Latin mammal, coined 1758 by Linnaeus for the class of mammals, from Late Latin mammalis (“of the breast”), from Latin mamma (“breast”), perhaps cognate with mamma (mother).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.