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thylakoid

[ thahy-luh-koid ]
/ ˈθaɪ ləˌkɔɪd /
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noun Cell Biology.
a flattened sac or vesicle lined with a pigmented membrane that is the site of photosynthesis, in plants and algae occurring in interconnected stacks constituting a granum of the chloroplast, and in other photosynthesizing organisms occurring either singly or as part of the cell membrane or other structure.
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Origin of thylakoid

1965–70; <German Thylakoid<Greek thȳlakoeidḗs resembling a bag, equivalent to thȳ́lak(os) sack + -oēidēs-oid

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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Scientific definitions for thylakoid

thylakoid
[ thīlə-koid′ ]

A saclike membrane that contains the chlorophyll in cyanobacteria and in the chloroplasts of plant cells and green algae. In chloroplasts, thylakoids are arranged in stacks called grana.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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