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


  • Florida fisherman hooks giant shrimp-like crustacean
    Brooks Hays FORT PIERCE, Fla., Sept. 5 (UPI) -- A man fishing off a dock in Florida this week reeled in a massive shrimp-like crustacean -- stretching 18 inches in length. Read more on this news related to 'Crustacean'
  • Seahawks' crabbiest fan, Marshawn Pinch, retiring
    Marshawn Pinch, the Seahawks’ 12th Crustacean, has hung up his shelmet for good. Read more on this news related to 'Crustacean'
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    In this photo provided by Owls Head Lobster Company, two albino lobsters sit in a crate with other lobsters at Owls Head Lobster Company in Owls Head, Maine, Friday, Sept. 5, 2014. The Portland Press Herald reports Bret Philbrick caught the curious crustacean off of Owls Head on Thursday and Joe Bates caught one off the Rockland breakwater days earlier. Read more on this news related to 'Crustacean'

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