parazoan

Definitions of parazoan
  1. noun
    primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies
    synonyms: poriferan, sponge
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    types:
    glass sponge
    a siliceous sponge (with glassy spicules) of the class Hyalospongiae
    Venus's flower basket
    a deep-water marine sponge having a cylindrical skeleton of intricate glassy latticework; found in the waters of the East Indies and the eastern coast of Asia
    type of:
    invertebrate
    any animal lacking a backbone or notochord; the term is not used as a scientific classification
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