pyrenoid

noun
py·re·noid | \pī-ˈrē-ˌnȯid, ˈpī-rə- \

Definition of pyrenoid 

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

First Known Use of pyrenoid

circa 1875, in the meaning defined above

History and Etymology for pyrenoid

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

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The first known use of pyrenoid was circa 1875

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