troph

troph-

variant of tropho- before a vowel: trophallaxis.
Dictionary.com Unabridged

-troph

a combining form used in the formation of nouns with the general sense “nutrient matter” (embryotroph ), “an organism with given nutritional requirements” (heterotroph ); also forming concrete nouns corresponding to abstract nouns ending in -trophy, or adjectives ending in -trophic.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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