granule

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granule,

in astronomy: see photospherephotosphere,
luminous, apparently opaque layer of gases that forms the visible surface of the sun or any other star. The photosphere lies between the dense interior gases and the more attenuated gases of the chromosphere.
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granule

[′gran·yül]
(astronomy)
A convective cell in the solar photosphere, about 600 miles (1000 kilometers) in diameter.
(geology)
A somewhat rounded rock fragment ranging in diameter from 2 to 4 millimeters; larger than a coarse sand grain and smaller than a pebble.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

granule

Geology a single rock fragment in gravel, smaller than a pebble but larger than a sand grain
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
In the interfollicular regions of tail skin specimen removed from fatty acid mixture-treated mice, granular cells with prominent nucleus and cytoplasm with the typical keratohyalin granules were found in the epidermal stratum (Fig.
Profilaggrin is a product of the keratohyalin granules. Each profilaggrin contains 10-12 copies of the 37-kDa filaggrin peptide.
The granular layer was thickened and showed coarse keratohyalin granules with marked vacuolization of the granular and upper spinous layers.
Biopsy was consistent with marked epidermal acanthosis and hyperkeratosis inter and intracellular spaces as a result of suprabasal cytolysis and multiple perinuclear vacuoles and large clumped keratohyalin granules in the spinous and granular layers (Figure 4).