contractile vacuole definition

  • noun:
    • A membrane-bound organelle present certain protists that pumps fluid in a cyclical way from in the cell towards the external by alternatively filling after which contracting to release its articles at different points on top of this cellular. It works in keeping osmotic balance.
    • A vacuole that removes waste or excess liquid.
    • view under Contractile, and discover Illusts. of Infusoria, and Lobosa.
  • adjective:
    • a pulsating hole when you look at the inside of a protozoan, supposed to be excretory in function. There could be one, two, or maybe more.
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