pyrenoid


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py·re·noid

(pī'rĕ-noyd),
One of the minute luminous bodies sometimes visualized in the chromatophores of some protozoa, such as Euglena viridis.
[G. pyrēn, pit of a fruit, + eidos, resemblance]

pyrenoid

a region of starch formation found in the CHLOROPLASTS of various algae, for example, Spirogyra, Chlamydomonas.