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Definition of mammal noun from the Oxford Advanced Learner's Dictionary

mammal

noun
 
/ˈmæml/
 
/ˈmæml/
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  1. any animal that gives birth to live young, not eggs, and feeds its young on milk. Cows, humans and whales are all mammals.
    • deaths among marine mammals
    Topics Animalsb2
    Oxford Collocations Dictionaryadjective
    • large
    • small
    • higher
    mammal + noun
    • species
    • population
    preposition
    • among mammals
    See full entry
    Word Originearly 19th cent.: anglicized form (first used in the plural) of modern Latin mammalia, neuter plural of Latin mammalis (adjective), from mamma ‘breast’.
See mammal in the Oxford Advanced American DictionarySee mammal in the Oxford Learner's Dictionary of Academic English
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