crustacean
noun
any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice.
crustaceans
-
pluralof crustacean.plural
The grammatical form denoting more than one person, place, thing, or idea.
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.
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
Instead, it has proven to be about Appalachian springsnails—and a few other rare or endangered species, including freshwater mussels, fish, and crustaceans.
From Slate ● Apr. 27, 2026
The job Jonas has is about as far away from the crustaceans as Earth is from Mars.
From The Wall Street Journal ● Jan. 23, 2026
It’s there that the baleen filter feeders spend the summer gorging on tiny crustaceans from the muddy bottom of the Bering, Chuckchi and Beaufort seas, creating shallow pits or potholes in the process.
From Los Angeles Times ● Jan. 8, 2026
This would be true also of the stone crab and other crustaceans which have direct economic importance as human food.
From "Silent Spring" by Rachel Carson
