n.
A proteinaceous structure found within the chloroplast of certain algae and bryophytes. It is considered to be associated with starch deposition.
[New Latin pȳrēna, fruit stone; see pyrene + -OID.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
