Definition of plastoquinone in English:

plastoquinone

Pronunciation /ˌplastə(ʊ)ˈkwɪnəʊn/

noun

Biochemistry
  • Any of a homologous series of compounds which have a quinone nucleus with a terpenoid side chain; specifically one of these occurring in the chloroplasts of plants and involved in electron transfer during photosynthesis.

Origin

1950s. From plast- + -o- + quinone.