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heliotropism

he·li·ot·ro·pism

heliotropism

pronunciation:
hi li a tr pih zm
features:
Word Parts
part of speech: noun
definition: the tendency to turn toward or away from light, esp. sunlight, as in a sunflower.
Word Parts
The word heliotropism contains the following parts:
heli, helio Greek root that means sun
synonyms:
sol1
 
-ism1 Greek noun-forming suffix that means act, process, state, practice, or instance of
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The suffix -ism1 attaches to Greek roots to form nouns which usually have a corresponding verb ending in "-ize, -ise". See also -ism2.