any of numerous carnivorous mammals of the family Mustelidae, comprising the weasels, martens, skunks, badgers, and otters.
belonging or pertaining to the family Mustelidae.

1905–10; < Neo-Latin Mustelidae family name, equivalent to Mustel(a) a genus (Latin mustēla weasel) + -idae -id2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
mustelid   (mŭs'tə-lĭd')  Pronunciation Key 
Any of various small to midsize carnivorous mammals of the family Mustelidae, usually having long, slender bodies, short legs, and well-developed anal scent glands. The pelts of many mustelids have been important for use in clothing. Weasels, skunks, badgers, wolverines, ferrets, mink, martens, and otters are mustelids.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


any of 54 species of ferrets, polecats, badgers, martens, otters, the wolverine, and other members of the weasel family. Historically, skunks have also been included in Mustelidae, but genetic analyses suggest that they belong to a separate family of their own (Mephitidae). Mustelids are fur-bearing carnivores that inhabit terrestrial and aquatic regions throughout the world, except Australia, Antarctica, and most oceanic islands. Many, such as the American mink (Mustela vison), are trapped or raised commercially for their pelts.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Maintenance of this mustelid's health and quality of life is paramount for the endurance of the human-animal bond.
The sea otter is the largest species in the mustelid family, and one of the smallest marine mammals.
The presence of cottontails around some prairie wetlands is undoubtedly a prime attractant to mustelid and canid carnivores.
Mustelid, squirrel and porcupine population trends during a snowshoe hare cycle.
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