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heliotaxis

[hee-lee-oh-tak-sis] /ˌhi li oʊˈtæk sɪs/
noun, Biology.
1.
movement of an organism toward or away from sunlight.
Origin of heliotaxis
1895-1900
First recorded in 1895-1900; helio- + -taxis
Related forms
heliotactic
[hee-lee-oh-tak-tik] /ˌhi li oʊˈtæk tɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for heliotaxis

heliotaxis

/ˌhiːlɪəʊˈtæksɪs/
noun
1.
movement of an entire organism in response to the stimulus of sunlight
Derived Forms
heliotactic (ˌhiːlɪəʊˈtæktɪk) adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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