photoisomericadj.
/ˌfəʊtəʊʌɪsəˈmɛrɪk/, U.S. /ˈˌfoʊdoʊˌaɪsoʊˈmɛrɪk/, /ˈˌfoʊdoʊˌaɪzəˈmɛrɪk/ Chemistry.
Of, belonging to, or characteristic of an isomer formed by the action of light on a different, often more stable, form of a compound; exhibiting photoisomerism.
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photoisomeric1955
1955 Jrnl. Chem. Physics 23 1367/1 The final photoisomeric equilibrium was always independent of the isomeric composition before irradiation.
1973 Jrnl. Agric. & Food Chem. 21 1115/1 The oxirane ring of heptachlor epoxide is apparently more labile, because no photoisomeric derivative has been observed which contains this moiety intact.
1998 Pesticide & Toxic Chem. News (Nexis) 30 Apr. The great sensitivity of the embryos to retinoic acid..thereby ranking these photoisomeric substances as strong developmental toxicants.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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adj.1955