heliotropism

noun
he·​li·​ot·​ro·​pism | \ ˌhē-lē-ˈä-trə-ˌpi-zəm How to pronounce heliotropism (audio) \

Definition of heliotropism

: phototropism in which sunlight is the orienting stimulus

Other Words from heliotropism

heliotropic \ ˌhē-​lē-​ə-​ˈtrō-​pik How to pronounce heliotropism (audio) , -​ˈträ-​ \ adjective

First Known Use of heliotropism

circa 1854, in the meaning defined above

History and Etymology for heliotropism

borrowed from French héliotropisme, from hélio- helio- + -tropisme -tropism, after héliotrope -tropism

Note: The term was probably introduced by the Swiss naturalist Jean Senebier (1742-1809) in Physiologie végétale, tome 3 (Geneva, 1800?), p. 182.

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The first known use of heliotropism was circa 1854

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Cite this Entry

“Heliotropism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heliotropism. Accessed 28 Feb. 2021.

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More Definitions for heliotropism

heliotropism

noun
he·​li·​ot·​ro·​pism | \ ˌhē-lē-ˈä-trə-ˌpiz-əm How to pronounce heliotropism (audio) \

Medical Definition of heliotropism

: phototropism in which sunlight is the orienting stimulus

Other Words from heliotropism

heliotropic \ -​lē-​ə-​ˈtrōp-​ik How to pronounce heliotropism (audio) , -​ˈträp-​ How to pronounce heliotropism (audio) \ adjective

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