[ pahy-ree-noid, pahy-ruh-noid ]
/ paɪˈri nɔɪd, ˈpaɪ rəˌnɔɪd /
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a spherical protein structure found within chloroplasts of certain algae and hornworts.
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Words nearby pyrenoid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for pyrenoid
The pyrenoid is evidently concerned in the formation of the chromatophore, or in its division.
Schmitz states that the chromatophore is thickened in the middle and contains a pyrenoid.
A pyrenoid lies in a fold of the chromatophore on the dorsal part.
British Dictionary definitions for pyrenoid
/ (ˈpaɪrəˌnɔɪd) /
any of various small protein granules that occur in certain algae, mosses, and protozoans and are involved in the synthesis of starch
Word Origin for pyrenoid
C19: from pyrene ² + -oid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012