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a combining form meaning “nourishment,” used in the formation of compound words: trophosome.
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Which sentence is correct?
Also especially before a vowel, troph-.

Origin of tropho-

Combining form of Greek trophḗ nourishment, food; akin to tréphein to feed, nourish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023


What does tropho- mean?

Tropho- is a combining form used like a prefix meaning “nourishment.” It is often used in scientific terms, especially in biology and zoology.

Tropho- comes from the Greek trophḗ, meaning “nourishment, food.”

What are variants of tropho-?

When combined with words or word elements that begin with a vowel, tropho- becomes troph, as in trophallaxis.

Corresponding forms of tropho- combined to the end of words are -troph, -trophic, and -trophy. Learn more at our Words That Use articles for the terms.

Examples of tropho-

One example of a term from biology that features tropho- is trophoblast, a layer of tissues in some animals that feeds the embryo and forms much of the placenta.

The first part of the word, tropho-, means “nourishment,” as we have seen. The second part of the word, blast, means “embryo,” among other things. Trophoblast literally translates to “embryo nourishment.”

What are some words that use the combining form tropho-?

What are some other forms that tropho- may be commonly confused with?

Break it down!

A trophosome is an organ found in some marine worms. Based on the meaning of tropho-, what is the basic function of this organ?

How to use tropho- in a sentence

British Dictionary definitions for tropho-


before a vowel troph-

combining form
indicating nourishment or nutritiontrophozoite

Word Origin for tropho-

from Greek trophē food, from trephein to feed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012