Meaning of plastid

plas•tid

Pronunciation: (plas'tid), [key]
— n. Cell Biol.
  1. a small, double-membraned organelle of plant cells and certain protists, occurring in several varieties, as the chloroplast, and containing ribosomes, prokaryotic DNA, and, often, pigment.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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