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Crustacean Meaning and Definition in Dictionary

Crustacean Meaning and Definition from WordNet (r) 2.0
    crustacean adj : of or belonging to the class Crustacea [syn: crustaceous] n : any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton
Crustacean Meaning and Definition from Webster's Revised Unabridged Dictionary (1913)
    Crustacean \Crus*ta"cean\ (kr?s-t?"shan; 97), a. (Zo["o]l.) Of or pertaining to the Crustacea; crustaceous. -- n. An animal belonging to the class Crustacea.

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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.

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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'
  • Rare crustacean set to pull in the crowds
    AN albino lobster, described as one in a million, is coming out of his shell as a new tourist attraction. Read more on this news related to 'Crustacean'
  • Teen snares ultra-rare blue lobster
    A Maine teenager and her dad trapped an incredibly rare blue lobster, and will donate the one-in-2 million crustacean to an aquarium. The aptly named “Skyler” is ticketed for the... Read more on this news related to 'Crustacean'

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