Dictionary.com
definitions
  • synonyms

plastid

[plas-tid]
noun Cell Biology.
  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.
Show More

Origin of plastid

1875–80; < German Plastide < Greek plastid-, stem of plástis, feminine derivative of plástēs modeler, creator, derivative of plássein to form
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for plastid

Historical Examples of plastid

  • Vacuoles are seen in cells; and there is an opinion that these may be a special kind of plastid: some vacuoles pulsate.

    The Ethics of Medical Homicide and Mutilation

    Austin O'Malley


British Dictionary definitions for plastid

plastid

noun
  1. any of various small particles in the cytoplasm of the cells of plants and some animals that contain pigments, starch, oil, protein, etcSee chromoplast
Show More

Word Origin for plastid

C19: via German from Greek plastēs sculptor, from plassein to form
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for plastid

n.

1876, from German plastid, coined by Haeckel from Greek plastos "molded, formed" (see plaster) + -id.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

plastid in Medicine

plastid

(plăstĭd)
n.
  1. Any of several pigmented cytoplasmic organelles found in plant cells and other organisms, having various physiological functions, such as the synthesis and storage of food.trophoplast
  2. One of the granules of foreign or differentiated matter, food particles, or waste material in cells.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

plastid in Science

plastid

[plăstĭd]
  1. An organelle found in the cells of plants, green algae, red algae, and certain other protists. Like mitochondria, plastids have an inner and outer membrane, and contain their own DNA and ribosomes. Some plastids, such as the chloroplasts in plant leaves, contain pigments.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.