Definition of -tropic in English:

-tropic

Syllabification: -tropic

combining form

1Turning toward: heliotropic
2Affecting: psychotropic
3(Especially in names of hormones) equivalent to -trophic.

Origin

from Greek tropē 'turn, turning'.

Definition of -tropic in:

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Word of the day hypnopompic
Pronunciation: ˌhipnəˈpämpik
adjective
relating to the state immediately preceding waking up...