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Able to swim freely; not sessile or attached: free-swimming oyster larvae.

free′-swim′mer n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Zoology) (of aquatic animals or larvae) not sessile or attached to any object and therefore able to swim freely in the water
ˌfree-ˈswimmer n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(of aquatic organisms) not attached to a base or joined in a colony; capable of swimming about freely.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend: - (of animals) able to swim about; not attached
animal, animate being, beast, creature, fauna, brute - a living organism characterized by voluntary movement
vagile - having freedom to move about; "vagile aquatic animals"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
SmartBall is an innovative free-swimming in-line leak detection technology designed to operate in live large diameter pipelines.
Because free-swimming coral larvae reefs in the region in our lifetimes, says Steve Palumbi of Stanford University.
This summer, the team hopes to release a free-swimming model into a pond, and soon, into the open sea.
Carbonate ions are abundant in most surface waters, and corals and some free-swimming organisms use the material to form their calcium carbonate skeletons or shells, says Richard A.