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.

granule

Geology a single rock fragment in gravel, smaller than a pebble but larger than a sand grain
References in periodicals archive ?
Electron microscopic changes in muscle and liver of restricted feeding lambs involved progressive cell degeneration demonstrated by reducing muscle fiber size, swollen mitochondria, and reduce glycogen granules in the liver and muscles.
For the first time, this study has shown that 3NPA-induced cardiomyopathy is accompanied by a significant accumulation of glycogen granules in cardiomyocytes compared with the control group.
Electronic microscopy found displacement of organelles toward the periphery and a focal presence of glycogen granules in cytoplasm; these changes are compatible with type I glycogenosis.