Definition of photoisomerism in English:

photoisomerism

noun

Chemistry
  • The property of a compound of having two or more forms which can be converted from one to another by the action of light; this phenomenon.

Origin

1940s; earliest use found in Proceedings of the Royal Society of London. From photo- + isomerism.

Pronunciation

photoisomerism

/ˌfəʊtəʊʌɪˈsɒmərɪz(ə)m/