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See also: tropic, Tropic, and tropić



Borrowed from Ancient Greek τροπικός (tropikós, of or pertaining to a turn or change; or the solstice; or a trope or figure; tropic; tropical; etc.), from τροπή (tropḗ, turn; solstice; trope). Compare trope and tropic.



  1. (sciences) Turning or changing.
  2. (sciences) Affecting or attracted to the thing specified.
    psycho- (mind) + ‎-tropic (altering) → ‎psychotropic (mind-altering)

Usage notes[edit]

Frequently confused with -trophic (growth, development; nutrition), which is instead from Ancient Greek τροφικός (trophikós, pertaining to food or nourishment), from τροφή (trophḗ, food).[1] Compare tropic hormone (drives other glands) and trophic hormone (affects growth) and tropo-/tropho-.

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Related terms[edit]


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  1. ^ Trophic vs. Tropic”, Werner Steinberg, JAMA, May 3, 1952, 149(1), p. 82, doi:10.1001/jama.1952.02930180084027.