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Related to natant: elating
Floating or swimming in water: natant crustaceans.
[Latin natāns, natant-, present participle of natāre, frequentative of nāre, to swim; see snā- in Indo-European roots.]
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.
1. (Botany) (of aquatic plants) floating on the water
2. rare floating or swimming
[C18: from Latin natāns, present participle of natāre to swim]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
[1700–10; < Latin natant-, s. of natāns, present participle of natāre to swim]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.