One of the mysteries of the English language finally explained.
Any of a class of small organelles, such as chloroplasts, in the cytoplasm of plant cells, containing pigment or food.
- ‘These protoplasts had a thick cytoplasm with numerous plastids and mitochondria.’
- ‘This feature is especially obvious in plant cells containing both mitochondria and plastids.’
- ‘In general, stromules are more abundant in tissues containing non-green plastids, and in cells containing smaller plastids.’
- ‘Alternatively, embryo plastids and leaf chloroplasts were prepared as described, but without illumination.’
- ‘Sieve-tube members are also living cells in leaves, and contain plastids but not chloroplasts.’
Late 19th century: from German, based on Greek plastos ‘shaped’.
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