plastid
plastid definition
plas·tid (plas′tid)
noun
any of several specialized protoplasmic structures occurring in the cytoplasm of some plant cells, in which starch, oil, protein, pigment, etc. are stored
Etymology: Ger plastiden (pl.) < Gr plastides, pl. of plastis, fem. of plastēs, molder < plassein, to form: see plastic
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