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Living in fresh water but migrating to marine waters to breed. Used of fish.
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 fishes such as the eel) migrating down rivers to the sea in order to breed. Compare anadromous
[C19: from Greek katadromos, from kata- down + dromos, from dremein to run]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ca•tad•ro•mous(kəˈtæd rə məs)
(of fish) migrating from fresh water to spawn in the sea (disting. from anadromous).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
a term describing fish that migrate downriver to spawn.See also: Fish
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
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|Adj.||1.||catadromous - migrating from fresh water to the sea to spawn|
anadromous - migrating from the sea to fresh water to spawn
diadromous - (used of fish) migratory between fresh and salt waters
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