plastoquinone

noun

plas·​to·​qui·​none ˌpla-(ˌ)stō-kwi-ˈnōn How to pronounce plastoquinone (audio) -ˈkwi-ˌnōn How to pronounce plastoquinone (audio)
: a plant substance that is related to vitamin K and plays a role in photosynthetic phosphorylation

Word History

Etymology

Greek plastos + English quinone

First Known Use

1958, in the meaning defined above

Time Traveler
The first known use of plastoquinone was in 1958

Browse Nearby Words

Cite this Entry

“Plastoquinone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plastoquinone. Accessed 4 Mar. 2025.

Medical Definition

plastoquinone

noun
plas·​to·​qui·​none ˌplas-(ˌ)tō-kwin-ˈōn How to pronounce plastoquinone (audio) -ˈkwin-ˌōn How to pronounce plastoquinone (audio)
: any of a group of substances that occur mostly in plant chloroplasts, are related to vitamin K, and play a role in photosynthetic phosphorylation

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