Definition of thylakoid in English:

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thylakoid

Pronunciation: /ˈTHīləˌkoid/

noun

Botany
Each of a number of flattened sacs inside a chloroplast, bounded by pigmented membranes on which the light reactions of photosynthesis take place, and arranged in stacks or grana.
Example sentences
  • Chloroplast envelopes, stacked grana and unstacked stroma thylakoids were well-defined.
  • Affected leaf tissue is white and the plastids lack thylakoids and chlorophyll.
  • The pigment proteolipids of thylakoids have both a photosynthetic function and a role in membrane structure.

Origin

1960s: from German Thylakoid, from Greek thulakoidēs 'pouchlike', from thulakos 'pouch'.

For editors and proofreaders

Syllabification: thy·la·koid

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