photomorphogenicadj.
/ˌfəʊtə(ʊ)mɔːfə(ʊ)ˈdʒɛnɪk/, U.S. /ˌfoʊdoʊmɔrfəˈdʒɛnɪk/ Botany.
Of or relating to the effects of light on the growth and development of plants; involving or causing such effects; relating to or produced by photomorphogenesis.
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photomorphogenic1953
photomorphogenetic1960
1953 Amer. Jrnl. Bot. 40 634/2 This feature is characteristic of photoreactivation and differentiates it clearly from photomorphogenic effects.
1956 Plant Physiol. 31 279/1 This same reversible photoreaction was also established for the control of flower initiation of Xanthium..and photomorphogenic effects such as leaf expansion.
1971 Nature 27 Aug. 602/1 Acetylcholine, when given to dark grown seedlings, mimicked the effect of red light in certain photomorphogenic responses.
1991 Plant Cell 3 686/1 A class of photomorphogenic mutants..that have long hypocotyls in high irradiance white light have been isolated.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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adj.1953