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plastid Line breaks: plas|tid
Pronunciation: /ˈplastɪd/

Definition of plastid in English:


Any of a class of small organelles in the cytoplasm of plant cells, containing pigment or food.
Example sentences
  • These protoplasts had a thick cytoplasm with numerous plastids and mitochondria.
  • Sieve-tube members are also living cells in leaves, and contain plastids but not chloroplasts.
  • In general, stromules are more abundant in tissues containing non-green plastids, and in cells containing smaller plastids.


Late 19th century: from German, based on Greek plastos 'shaped'.

Definition of plastid in:

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