Definition of photoisomeric in US English:

photoisomeric

adjective

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.

Origin

1950s; earliest use found in Journal of Chemical Physics. From photo- + isomeric, after photoisomerism.

Pronunciation

photoisomeric

/ˌfəʊtəʊʌɪsəˈmɛrɪk/