Granule meaning

grăn'yo͝ol
A small grain or pellet; a particle.
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A rock or mineral fragment larger than a sand grain and smaller than a pebble, between 2 and 4 millimeters in diameter.
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One of the small, transient, luminous markings in the photosphere of the sun.
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A cellular or cytoplasmic particle, especially one that stains readily.
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A small grain.
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A small, grainlike particle or spot; specif., any of the small, bright areas on the sun's photosphere that last only a few minutes.
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A small grain or pellet; a particle.
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A cellular or cytoplasmic particle, especially one that stains readily.
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A rock or mineral fragment larger than a sand grain and smaller than a pebble. Granules have a diameter between 2 and 4 mm (0.08 and 0.16 in) and are often rounded.
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Any of the small, transient convective cells within the Sun's photosphere where hot gases rise and quickly dissipate. Granules are generally between a few hundred and 1,500 km in width. They completely cover the Sun's surface, giving it its characteristic grainy or stippled look, and form and break up within a matter of minutes.
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An aggregate of enclosed grainy matter found in a cell. Granulocytes, mast cells and other cells contain granules in their cytoplasm, which differ in size and can often be identified by a characteristic laboratory stain based on their composition. Granules produce and store biologically active substances, the release of which is called degranulation . The granules of granulocytes contain mostly multiple enzymes and other proteins; those of mast cells contain histamine and other chemical mediators.
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A tiny grain, a small particle.
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(biology) A small structure in a cell.
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(geology) A particle from 2 to 4 mm in diameter, following the Wentworth scale.
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(astronomy) A small mark in the photosphere of the sun caused by convection currents. See also Granule (solar physics).
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Origin of granule

  • Late Latin grānulum diminutive of Latin grānum grain gr̥ə-no- in Indo-European roots
    From American Heritage Dictionary of the English Language, 5th Edition
  • From Late Latin granulum, diminutive of Latin granum (“grain”); see grain.
    From Wiktionary