pyrenoid

noun

py·​re·​noid pī-ˈrē-ˌnȯid  ˈpī-rə- 

: a protein body in the chloroplasts of algae and hornworts that is involved in carbon fixation and starch formation and storage

Word History

Etymology

International Scientific Vocabulary, from New Latin pyrena stone of a fruit, from Greek pyrēn; akin to Greek pyros wheat grain, wheat — more at furze

First Known Use

circa 1875, in the meaning defined above