: 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
mammal-like
adjective
or less commonly mammallike
mammal-like behavior
mammallike reptiles
Examples of mammal in a Sentence
Human beings, dogs, and cats are all mammals.
Recent Examples on the Web
No carbs, no problem Bats are unique amongst mammals and vampires are unique among bats.
—
Mack Degeurin, Popular Science, 7 Nov. 2024
The compound naturally occurs in a variety of mammals and plants.
—Oshan Jarow, Vox, 4 Nov. 2024
These small cats, often mistaken for house cats due to their size and coloration, are capable jumpers and hunters of small mammals and birds.
—Tom Howarth
follow, Newsweek, 1 Nov. 2024
The ship will travel on to Antarctica, South Georgia, and the Falkland Islands, providing myriad opportunities to marvel at pristine landscapes; catch sight of marine mammals, penguins, and other rare birdlife; and visit towns that evoke Victorian England.
—Robb Report Studio, Robb Report, 1 Nov. 2024
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Mack Degeurin, Popular Science, 7 Nov. 2024
The compound naturally occurs in a variety of mammals and plants.
—Oshan Jarow, Vox, 4 Nov. 2024
These small cats, often mistaken for house cats due to their size and coloration, are capable jumpers and hunters of small mammals and birds.
—Tom Howarth
follow, Newsweek, 1 Nov. 2024
The ship will travel on to Antarctica, South Georgia, and the Falkland Islands, providing myriad opportunities to marvel at pristine landscapes; catch sight of marine mammals, penguins, and other rare birdlife; and visit towns that evoke Victorian England.
—Robb Report Studio, Robb Report, 1 Nov. 2024
See all Example Sentences for mammal
Dictionary Entries Near mammal
Cite this Entry
“Mammal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mammal. Accessed 22 Nov. 2024.
Copy CitationKids Definition
mammal
noun
mam·mal
ˈmam-əl 
: any of a class of warm-blooded vertebrates that include human beings and all other animals that nourish their young with milk produced by mammary glands and have the skin usually more or less covered with hair
Medical Definition
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