Mammal meaning

măm'əl
The definition of a mammal is a type of warm-blooded animal that breast feeds their babies and usually has hair.

An example of a mammal is a human.

An example of a mammal is a whale.

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An animal of the class Mammalia, characterized by being warm-blooded, having hair and feeding milk to its young.
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(paleontology) A vertebrate with three bones in the inner ear and one in the jaw.
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Any of a large class (Mammalia) of warmblooded, usually hairy vertebrates whose offspring are fed with milk secreted by the female mammary glands.
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Any of various warm-blooded vertebrate animals of the class Mammalia, including humans, characterized by a covering of hair on the skin and, in the female, milk-producing mammary glands for nourishing the young.
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Any of various warm-blooded vertebrate animals of the class Mammalia, whose young feed on milk that is produced by the mother's mammary glands. Unlike other vertebrates, mammals have a diaphragm that separates the heart and lungs from the other internal organs, red blood cells that lack a nucleus, and usually hair or fur. All mammals but the monotremes bear live young. Mammals include rodents, cats, dogs, ungulates, cetaceans, and apes.
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Any of various warm-blooded vertebrate animals of the class Mammalia, including humans, characterized by a covering of hair on the skin and, in the female, milk-producing mammary glands for nourishing the young.
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Origin of mammal

  • From Late Latin mammālis of the breast from Latin mamma breast mā-2 in Indo-European roots
    From American Heritage Dictionary of the English Language, 5th Edition
  • Modern Latin Mammalia, coined 1758 by Linnaeus for the class of mammals, from neuter plural of Late Latin mammalis (“of the breast"), from Latin mamma (“breast"), perhaps cognate with mamma (mother).
    From Wiktionary