mammal

noun

mam·mal | \ ˈma-məl

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

, ma- \ adjective or noun

mammal-like also 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

Fast forward to the present, and the honeymoon in the sun may be over for mammals. — Kaitlyn Gaynor, CNN, "To avoid humans, more wildlife now work the night shift," 14 June 2018 Megan Ferguson, a scientist with National Marine Fisheries Service who runs the aerial survey program for Arctic marine mammals, said observers in 2016 and 2017 have seen huge groups of whales feeding off the mouths of Alaska rivers in summer. — Alex Demarban, Anchorage Daily News, "Bowhead whales, dwellers of icy seas, enjoy steady growth off Alaska in the age of climate change," 13 May 2018 Research into new Assisted Reproductive Techniques for large mammals is underway due to him. — Umair Irfan, Vox, "7 things we’ve learned about Earth since the last Earth Day," 21 Apr. 2018 On average, the size of primates' brains is nearly double what is expected for mammals of the same body size. — Scientific American, "How Has the Human Brain Evolved?," 9 Apr. 2018 The results likely also apply to humans and other mammals, so Moeller's mice may shed some light on our own internal ecology. — Kiona N. Smith, Ars Technica, "Mammals inherit most of their gut bacteria, new study suggests," 26 Oct. 2018 However, most other mammals experience symptoms if they are infected. — Korin Miller, SELF, "What to Know About the Rare and Deadly Nipah Virus," 29 May 2018 In addition to deer, the land is home to other mammals such as elk, black bear, wolves, coyotes and bobcat. — Lee Bergquist, Milwaukee Journal Sentinel, "DNR adds more land for fishing, hunting and other public uses in $7.2 million deal," 23 May 2018 One of the fastest land mammals, the elegant, horned beasts can run as fast as 60 mph. — Mare Czinar, azcentral, "Arizona hike: Wildlife abounds on the South Fork Trail," 19 June 2018

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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Dictionary Entries near mammal

Statistics for mammal

Last Updated

14 Apr 2019

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Time Traveler for mammal

The first known use of mammal was in 1813

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More Definitions for mammal

mammal

noun

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

See the full definition for mammal in the English Language Learners Dictionary

mammal

noun

mam·mal | \ ˈma-məl

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