What does "pyrenoid" mean?

any of several transparent structures found in the chloroplast of certain algae etc.; they are responsible for the fixation of carbon dioxide and the formation of starch

Pyrenoid

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
any of several transparent structures found in the chloroplast of certain algae etc.; they are responsible for the fixation of carbon dioxide and the formation of starch

Etymology

From pyrene + -oid.

Related phrases

carbon dioxide

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.