The building blocks of English

Affixes

-tropy

Forming nouns that correspond to adjectives in -tropic.

Greek tropos, turning.

Examples include isotropy (Greek isos, equal), having a physical property which has the same value when measured in different directions; pleiotropy (Greek pleiōn, more), the production by a single gene of two or more apparently unrelated effects; thixotropy (Greek thixis, touching), the property of becoming less viscous when subjected to an applied stress, shown for example by some gels which become temporarily fluid when shaken or stirred; allotropy (Greek allo‑, other), the existence of two or more different physical forms of a chemical element.