photoisomeric
/ˌfəʊtəʊʌɪsəˈmɛrɪk/Chemistry
adjective
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.
Origin
1950s; earliest use found in Journal of Chemical Physics. From photo- + isomeric, after photoisomerism.