heliotropism

noun he·li·ot·ro·pism \ˌhē-lē-ˈä-trə-ˌpi-zəm\

Definition of HELIOTROPISM

: phototropism in which sunlight is the orienting stimulus

— he·lio·tro·pic \-lē-ə-ˈtrō-pik, -ˈträ-\ adjective

See heliotropism defined for kids

circa 1854

Medical Dictionary

noun he·li·ot·ro·pism \ˌhē-lē-ˈä-trə-ˌpiz-əm\

: phototropism in which sunlight is the orienting stimulus

—he·lio·tro·pic \-lē-ə-ˈtrōp-ik, -ˈträp-\ adjective

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