Crustacean

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Crustacean Meaning and Definition in Dictionary

Definitions from Wordnet 2.0


  • any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton
  • of or belonging to the class Crustacea

Definitions from Wiktionary


  • any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton

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Crustacean Meaning and Definition in Wikipedia


The Crustacea are a subphylum of arthropods with 50,000 described species. They are part of the phylum Arthropoda. Crustaceans include crabs, lobsters, crayfish, shrimp, krill and barnacles. They are relatives of insects. If the Arthropods are regarded as a superphylum, then the insects and crustaces would be phyla. (see List of animal phyla). The group has an extensive fossil record, reaching back to the Cambrian.

Most crustaceans are aquatic, mostly marine. Some have moved onto land permanently. Crustaceans that live on land include some crabs, and woodlice. Crustacea range in size from a parasite 0.1mm long, to the Japanese spider crab with a leg span of up to 14ft (4.3 m) and a mass of 44lb (20kg). The North Atlantic lobster can weigh more than 40 pounds.

Most crustaceans are mobile, but some become sessile after their larval stage. Barnacles become attached to rocks on thesea shore. Some are parasitic, like fish lice, and tongue worms. Crustacea usually have separate sexes, and the eggs hatch into larvae.



Crustacean Sample Sentences in News


  • Federal officials plan to track every fish and crustacean shipped to U.S. ports
    A new federal initiative will try to determine the route of every fish and crustacean shipped to U.S. ports. Read more on this news related to 'Crustacean'
  • Material Made From Crustaceans Could Combat Battlefield Blood Loss
    MTorrice writes: A foam composed of a polymer derived from crustacean shells may prevent more soldiers from falling victim to the most prolific killer on the battlefield: blood loss. Pressure is one of the best tools that medics have to fight bleeding, but they can't use it on severe wounds near organs. Here, compression could do more harm than good. First res Read more on this news related to 'Crustacean'
  • Seafood sellers prepare for Good Friday rush
    NEW ORLEANS, LA(WVUE)—Local seafood markets are preparing for an onslaught of customers as we near the end of the Lenten season.And while warmer weather has helped the crawfish crop and prices, another crustacean is in short supply.At Captain Sid's Seafood in Bucktown raw crawfish were scooped up. Others were on a conveyor belt.With just days before Good Fri Read more on this news related to 'Crustacean'

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