mammal

[mam-uhl]
noun
any vertebrate of the class Mammalia, having the body more or less covered with hair, nourishing the young with milk from the mammary glands, and, with the exception of the egg-laying monotremes, giving birth to live young.

Origin:
1820–30; as singular of Neo-Latin Mammalia neuter plural of Late Latin mammālis of the breast. See mamma2, -al1

mammallike, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
mammal (ˈmæməl)
 
n
any animal of the Mammalia, a large class of warm-blooded vertebrates having mammary glands in the female, a thoracic diaphragm, and a four-chambered heart. The class includes the whales, carnivores, rodents, bats, primates, etc
 
[C19: via New Latin from Latin mamma breast]
 
mammalian
 
adj, —n
 
'mammal-like
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

mammal
1826, Anglicized form of Mod.L. Mammalia (1773), coined 1758 by Linnaeus for the class of mammals, from neut. pl. of L.L. mammalis "of the breast," from L. mamma "breast," perhaps cognate with mamma.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
mammal   (mām'əl)  Pronunciation Key 
Any of various warm-blooded vertebrate animals of the class Mammalia, whose young feed on milk that is produced by the mother's mammary glands. Unlike other vertebrates, mammals have a diaphragm that separates the heart and lungs from the other internal organs, red blood cells that lack a nucleus, and usually hair or fur. All mammals but the monotremes bear live young. Mammals include rodents, cats, dogs, ungulates, cetaceans, and apes.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

mammals definition


A class of vertebrates characterized by the production of milk by the females and in most cases, by a hairy body covering. Most mammals give live birth to their young. Human beings are mammals.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
The area is prime habitat for many birds and mammals.
The slow-moving mammals secret world is revealed in this video.
They have shown that all human beings are incredibly similar genetically-much
  more so than other species of large mammals.
Smaller mammals include raccoons and opossums that hunt for small fish and
  invertebrates.
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