WordReference Random House Unabridged Dictionary of American English © 2020
troph-, 
  • var. of  tropho- before a vowel:trophallaxis.

  • -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. 

  • WordReference Random House Unabridged Dictionary of American English © 2020
    tropho-, 
  • a combining form meaning "nourishment,'' used in the formation of compound words:trophosome.
  • Also,[esp. before a vowel,] troph-. 
    • akin to tréphein to feed, nourish combining form of Greek trophé̄ nourishment, food

    'troph-' also found in these entries:
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