• synonyms


adjective Zoology.
  1. (of aquatic organisms) not attached to a base nor joined in a colony; capable of swimming about freely.
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Origin of free-swimming

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for free-swimming

Historical Examples of free-swimming

  • The young barnacles when hatched from the egg are free-swimming larv as with the other Crustacea.

    Elementary Zoology, Second Edition

    Vernon L. Kellogg

  • The ascidian when born is a tiny, free-swimming, tadpole-like creature with a slender finned tail.

  • The young Sacculina is an active, free-swimming larva essentially like a young prawn or crab.

  • Besides the myriads of free-swimming copepods, there are parasitic forms in great number.

    The Sea-beach at Ebb-tide

    Augusta Foote Arnold

  • When the eggs hatch, the free-swimming young escape from the mantle cavity.

    The Sea-beach at Ebb-tide

    Augusta Foote Arnold

British Dictionary definitions for free-swimming


  1. (of aquatic animals or larvae) not sessile or attached to any object and therefore able to swim freely in the water
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Derived Formsfree-swimmer, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012