mussel
Americannoun
noun
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any of various marine bivalves of the genus Mytilus and related genera, esp M. edulis ( edible mussel ), having a dark slightly elongated shell and living attached to rocks, etc,
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any of various freshwater bivalves of the genera Anodonta, Unio, etc, attached to rocks, sand, etc having a flattened oval shell (a source of mother-of-pearl). The zebra mussel , Dreissena polymorpha, can be a serious nuisance in water mains
Usage
Where does mussel come from? Take a quick gander at your muscles. Do you think they look anything like ... mice? And do you think mice resemble mussels, as in the edible mollusk? This may sound odd to you, but to the ancient Romans, it would have made perfect sense. This is because both the words muscle and mussel come from musculus, which literally means "little mouse" (mus means and is related to "mouse"). As far as we can tell, the ancient Romans thought that the movement of a muscle, especially when flexing, looked like a mouse was running under your skin. If you don’t know how muscles work, it sounds as reasonable a guess as any. Now to the mollusk: the ancient Romans apparently also thought that mussels, the shellfish, looked like little mice. The word mussels also comes from that same Latin noun as muscle: musculus. The roots of these other words may get a rise—of laughter or surprise—out of you. Run on over to our roundup of them at "Weird Word Origins That Will Make Your Family Laugh."
Other Word Forms
Noun Inflected Forms
Etymology
Origin of mussel
before 1000; Middle English, Old English muscle < Vulgar Latin *mūscula, variant of Latin mūsculus little mouse, sea mussel. See muscle
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Laura Parker, a lawyer for the center, said it can be hard for people to understand why a tiny lizard, or rare mussel species, or the lesser prairie chicken are worth preserving.
From Salon ● Jul. 15, 2026
Supriyanto, 32, is a green mussel trader and once bought from local fishermen who harvested the shellfish offshore.
From Barron's ● Feb. 18, 2026
On Wednesday, they served a mussel dish with garlic confit and serrano chili developed by his breakfast sous chef.
From The Wall Street Journal ● Dec. 13, 2025
The Species in Peril report warns others could face a similar fate, including the high brown fritillary butterfly and rainbow-coloured Snowdon leaf beetle, Arctic-Alpine pea mussel, woolly feather-moss and eyed chestnut wrinkle-lichen.
From BBC ● Nov. 24, 2025
Even more varied and underappreciated than the salamander is the freshwater mussel.
From "A Walk in the Woods" by Bill Bryson
She said they eat a mixture of food such as clams and mussels and crustaceans, so there would plenty of food around the Scottish coast.
From BBC ● Apr. 28, 2026
The Appalachian springsnail hasn’t been documented in Washington County since the ’90s—not that many people have been looking—and the mussels live in the Potomac River, separated from the warehouse by Semple Run and Conococheague Creek.
From Slate ● Apr. 27, 2026
They say the mussels have disappeared because of the plant's wastewater.
From Barron's ● Feb. 18, 2026
The smoked rainbow trout and slow-smoked mackerel with chili flakes are my personal favorites, but Fishwife’s selection includes salmon, tuna, mussels, sardines, and even beautifully packaged caviar.
From Salon ● Dec. 4, 2025
It spends almost nothing—less than 3 percent of its budget—on research of any type, which is why no one knows how many mussels are extinct or even why they are going extinct.
From "A Walk in the Woods" by Bill Bryson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
