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单词 plastid
释义

Definition of plastid in English:

plastid

noun ˈplastɪdˈplæstəd
Botany
  • Any of a class of small organelles in the cytoplasm of plant cells, containing pigment or food.

    Example sentencesExamples
    • Alternatively, embryo plastids and leaf chloroplasts were prepared as described, but without illumination.
    • In general, stromules are more abundant in tissues containing non-green plastids, and in cells containing smaller plastids.
    • Sieve-tube members are also living cells in leaves, and contain plastids but not chloroplasts.
    • This feature is especially obvious in plant cells containing both mitochondria and plastids.
    • These protoplasts had a thick cytoplasm with numerous plastids and mitochondria.

Origin

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

 
 

Definition of plastid in US English:

plastid

nounˈplastədˈplæstəd
Botany
  • Any of a class of small organelles, such as chloroplasts, in the cytoplasm of plant cells, containing pigment or food.

    Example sentencesExamples
    • Sieve-tube members are also living cells in leaves, and contain plastids but not chloroplasts.
    • 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.

Origin

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

 
 
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更新时间:2025/3/16 2:58:02