mammal
noun
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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
ma-
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adjective or noun
Examples of mammal in a Sentence
Recent Examples on the Web
In the early 2000s, the idea of using sea mammals as ocean observers seemed laughable. — Kasha Patel, Smithsonian, "How Data-Gathering Seals Help Scientists Measure the Melting Antarctic," 13 July 2018 Canine transmissible venereal tumors is one of only three known kinds of cancer that can spread from a host to another mammal. — Marc Daalder, ajc, "Why none of our dog breeds are native to America," 6 July 2018 Canine transmissible venereal tumors (CTVT) is one of only three known kinds of cancer that can spread from a host to another mammal. — Marc Daalder, Detroit Free Press, "Dogs native to America were wiped out by Eurasian dogs," 5 July 2018 Some types of sharks have long been in the waters off western and northern Alaska, but those don't usually go after live mammals. — Annie Zak, Anchorage Daily News, "Research: Sharks might be eating more northern seals and sea lions in Alaska waters," 4 July 2018 What can kill you: A fatal disease that affects only mammals. — Bruce Henderson, charlotteobserver, "Be wary of these NC natural wonders this summer," 25 June 2018 Grass and grasslands hadn’t even evolved in the Cretaceous, and large mammals had yet to make their entrance. — National Geographic, "Could Humans and Dinosaurs Coexist? Here's the Science.," 22 June 2018 Just ask #MPRraccoon, currently the world’s second most famous trash-eating mammal thanks to its death-defying, Twitter-enthralling climb up the side of St. Paul’s 25-story USB Plaza. — Michael Andor Brodeur, BostonGlobe.com, "From a flipping pancake house to an overstuffed bot," 15 June 2018 Once it gets eaten, the parasite can then lay eggs in its new mammal host, and begin its dark cycle anew. — Laura Yan, Popular Mechanics, "These Brain Worms Turn Ants Into Death-Seeking Zombies," 10 June 2018These 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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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
\
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
\
Medical Definition of mammal
: any of the higher vertebrate animals comprising the class Mammalia
Other Words from mammal
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adjective or noun
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