Also found in: Medical.
Variant of tropho-.
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.
var. of tropho- before a vowel: trophallaxis.
a combining form meaning “an organism with nutritional requirements” of the kind specified: heterotroph.
[probably back formation from -trophic]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.