photonegativityn.
/ˌfəʊtəʊnɛɡəˈtɪvᵻti/, U.S. /ˈˌfoʊdoʊˌnɛɡəˈtɪvᵻdi/ Zoology.
Tendency to avoid or move away from light.
ΘΚΠ
the world > life > biology > biological processes > movement > movement in response to stimuli > [noun] > response to light
phototaxis1893
photopathy1897
heliotaxis1898
phototropism1899
photokinesis1905
photonegativity1921
photostability1926
photophily1934
the world > matter > physics > electromagnetic radiation > electricity > transmission of electricity, conduction > [noun] > photoconduction > increase or decrease when illuminated
photonegativity1921
photopositivity1962
1921 Amer. Naturalist 55 279 With advancing age.., the threshold for photonegativity becomes higher.
1974 Marine Biol. 25 313/2 Photokinesis and phototaxis were deliberately confounded in this measure, since there was no way to predict which behavioural element might respond to selection for photonegativity in the tidal pool.
1995 Proc. National Acad. Sci. U.S.A. 92 9474/1 Specific phenotypic effects on pigmentation, wing shape, catecholamine pools, and photonegativity all may reflect different alterations in neuropeptide processing.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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n.1921