Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English

-trope

Form; type; affinity.

[Greek tropos, turning.]

Words in -trope are nouns for organisms or objects that exhibit some characteristic whose abstract name ends in -tropism or -tropy, or for which an adjective exists in -tropic. An allotrope is one of two or more different physical forms in which an element can exist, an instance of allotropy; an isotrope (Greek isos, equal) is a substance that is isotropic, having the same composition in every direction; a phototrope is a plant that exhibits phototropism, growth or movement in response to light.

Heliotrope (Greek hēlios, sun) is now the name of a purple-flowered plant, but the term was once applied to various plants whose flowers turn towards the sun, a phenomenon called heliotropism; a lipotrope (Greek lipos, fat) is a substance that has an affinity for lipids and thus prevents excess fat from accumulating in the liver.

The ending also appears in a few names for nineteenth century scientific toys, in which the ending has the literal sense of ‘turning’: thaumatrope (Greek thauma, marvel), a disc with pictures on its sides, which appear to combine into one when the disc is spun; zoetrope (Greek zōē, life), a cylinder with a series of pictures on the inner surface that give an impression of continuous motion when viewed through slits with the cylinder rotating.

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