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 The hero dog was distracted by a brown horse on the other side of the parking lot fence, who moseyed over to see what his fellow mammals were up to. Steve Rubenstein, SFChronicle.com, "Hero search dog tries not to let fame of Point Reyes rescue get to his fuzzy head," 26 Feb. 2020 The winged mammal has been the reservoir for several different deadly viruses like Marburg, Nipah and Hendra, which have caused disease in humans and outbreaks in Uganda, Malaysia, Bangladesh and Australia. Katie Hunt, CNN, "Bats, the source of so many viruses, could be the origin of Wuhan coronavirus, say experts," 29 Jan. 2020 The six-month-old mammal is now bottle-fed by volunteers every several hours. Peter Dawson, Houston Chronicle, "Baby dolphin bitten by shark off the Texas coast, wounds being treated in Galveston," 24 Sep. 2019 The prehistoric mammal had also been breathing CO2-flooded air. Natalie Wolchover, WIRED, "As the World Warms, Clouds Could Disappear—Catastrophically," 3 Mar. 2019 The prehistoric mammal had also been breathing CO2-flooded air. Wired, "As the World Warms, Clouds Could Disappear—Catastrophically," 3 Mar. 2019 Cowlitz County Sheriff's Deputies responded to a report on Sunday that the nearly 600-pound seafaring mammal was in the road outside of Castle Rock, Washington. ABC News, "Sea lion found off the beaten path in Washington wilderness, returned to water," 25 Feb. 2020 On that day, news leaked out that the scientific journal Nature was about to publish a report of the birth of the first mammal cloned from adult cells — a sheep named Dolly. Henry T. Greely, STAT, "Human reproductive cloning: The curious incident of the dog in the night-time," 21 Feb. 2020 The woman splashed her hand in the water, tapped the boat’s side and blew kisses to the giant mammal. USA TODAY, "Rock slides wreak havoc, close encounters with great white shark, gray whale: News from around our 50 states," 14 Feb. 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

16 Mar 2020

Cite this Entry

“Mammal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mammal. Accessed 28 Mar. 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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