from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A small grain or pellet; a particle.
  • n. Geology A rock or mineral fragment larger than a sand grain and smaller than a pebble, between 2 and 4 millimeters in diameter.
  • n. Astronomy One of the small, transient, brilliant markings in the photosphere of the sun.
  • n. Biology A cellular or cytoplasmic particle, especially one that stains readily.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A tiny grain, a small particle.
  • n. A small structure in a cell.
  • n. A particle from 2 to 4 mm in diameter, following the Wentworth scale
  • n. a small mark in the photosphere of the sun caused by convection currents. See also Wikipedia:Granule (solar physics).

from the GNU version of the Collaborative International Dictionary of English

  • n. A little grain; a small particle; a pellet.

from The Century Dictionary and Cyclopedia

  • n. A little grain; a fine particle.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a tiny grain


Late Latin grānulum, diminutive of Latin grānum, grain; see gr̥ə-no- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Late Latin granulum, diminutive of Latin granum ("grain"); see grain. (Wiktionary)



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