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heliotropism

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

Definition of heliotropism

: phototropism in which sunlight is the orienting stimulus
—

heliotropic

play \ˌhē-lē-ə-ˈtrō-pik, -ˈträ-\ adjective

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First Known Use of heliotropism

circa 1854

in the meaning defined above

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Medical Dictionary

heliotropism

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

medical Definition of heliotropism

: phototropism in which sunlight is the orienting stimulus
—

heliotropic

play \-lē-ə-ˈtrōp-ik, -ˈträp-\ adjective

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