mammal

noun
mam·​mal | \ ˈma-məl How to pronounce mammal (audio) \

Definition of mammal

: any of a class (Mammalia) of warm-blooded higher vertebrates (such as placentals, marsupials, or monotremes) that nourish their young with milk secreted by mammary glands, have the skin usually more or less covered with hair, and include humans

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Other Words from mammal

mammalian \ mə-​ˈmā-​lē-​ən How to pronounce mammalian (audio) , ma-​ \ adjective or noun
mammal-like \ ˈma-​məl-​ˌlīk How to pronounce mammal-like (audio) \ or less commonly mammallike adjective
mammal-like behavior mammallike reptiles

Examples of mammal in a Sentence

Human beings, dogs, and cats are all mammals.
Recent Examples on the Web As one of three bat species in North America that feed on nectar, these mammals are responsible for pollinating cacti and agave plants across the region. National Geographic, "Lesser long-nosed bat," 8 Feb. 2020 Fellow mammals aren’t a safe role model for human foraging. Tim Macwelch, Outdoor Life, "10 Survival Tips To Get You Through Winter," 30 Dec. 2019 But falling mammals aren’t the primary reason why driving in California is so difficult. Wendy Leung, USA TODAY, "In California: Cleaning up tornado damage after Christmas storm," 26 Dec. 2019 Sociable, communicative and intelligent, these mammals are able to use tools such as rocks to smash open nuts, empty pods to scoop water and get termites out of their nests by using sticks. Chris Ciaccia, Fox News, "Chimps are killing people in Uganda: 'It broke off the arm... opened the stomach and removed the kidneys'," 13 Nov. 2019 Afterward, the only mammals left were tiny, rat-sized creatures. Cathleen O'grady, Ars Technica, "Fossil bonanza paints detailed picture of mammals after dinosaur extinction," 25 Oct. 2019 Interestingly, marine mammals aren’t always successful as avoiding the bends. Matthew Berger, Smithsonian, "Dolphins Have a Mysterious Network of Veins That Could Be Key to Preventing the Bends," 26 May 2018 William Watkins, the marine mammal researcher who discovered the singular singer and listened to it for 12 years, died in 2004. Erin Blakemore, Popular Science, "Seven mysterious sounds science has yet to solve," 27 Jan. 2020 While buffalo and bison are both mammals within the Bovidae family, the two are not all that closely related. National Geographic, "Bison or buffalo? Possum or opossum? What's the difference?," 23 Jan. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mammal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mammal

1813, in the meaning defined above

History and Etymology for mammal

from base of New Latin Mammalia (Linnaeus), class name, noun derivative from neuter plural of mammālis, from Latin mamma "breast, udder" + -ālis -al entry 1 — more at mamma

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Time Traveler for mammal

Time Traveler

The first known use of mammal was in 1813

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Statistics for mammal

Last Updated

17 Feb 2020

Cite this Entry

“Mammal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mammal. Accessed 26 Feb. 2020.

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More Definitions for mammal

mammal

noun
How to pronounce mammal (audio)

English Language Learners Definition of mammal

: a type of animal that feeds milk to its young and that usually has hair or fur covering most of its skin

mammal

noun
mam·​mal | \ ˈma-məl How to pronounce mammal (audio) \

Kids Definition of mammal

: a warm-blooded animal (as a dog, mouse, bear, whale, or human being) with a backbone that feeds its young with milk produced by the mother and has skin usually more or less covered with hair

mammal

noun
mam·​mal | \ ˈmam-əl How to pronounce mammal (audio) \

Medical Definition of mammal

: any of the higher vertebrate animals comprising the class Mammalia

Other Words from mammal

mammalian \ mə-​ˈmā-​lē-​ən, ma-​ How to pronounce mammalian (audio) \ adjective or noun

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More from Merriam-Webster on mammal

Spanish Central: Translation of mammal

Nglish: Translation of mammal for Spanish Speakers

Britannica English: Translation of mammal for Arabic Speakers

Britannica.com: Encyclopedia article about mammal

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