-tropy


Also found in: Medical.

-tropy

suff.
The state of turning in a specified way or from a specified stimulus: thixotropy.

[Greek -tropiā, from -tropos, -tropous.]
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.

-tropy

or

-tropism,

a combining form occurring in abstract nouns that correspond to adjectives ending in -tropic or -tropous: isotropy.
[< Greek -tropia. See -trope, -y3]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.