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 ?
On the other hand, histological study of the TM tissue gained in trabeculectomy demonstrated that pigment granules in trabecular spaces might be phagocytozed by trabecular cells, which helped to clear the trabecular spaces.
The presence of numerous pigment granules near the distal end and base of the process in S.
Pigment distribution is the pattern of the pigment granules observed in the hair shaft, such as uniform, peripheral, one-sided, variable, or central.
Since myosin appears to be the predominant motor activated during slow-phase aggregation (McNamara and Ri-beiro, 1999), this suggests that PKG phosphorylates proteins involved in myosin-based translocation of pigment granules.
It may contain cortical fusi, pigment granules, and/or large oval-to-round-shaped structures called ovoid bodies.
The rather ample cytoplasms of the chief cells were amphophilic to clear and contained a variable number of coarse brown-black pigment granules (Figures 2 and 3, A).
During the insect's pupa stage, individual wing cells metamorphose into "ornate hollow shells containing struts, pillars, pigment granules and/or more elaborate constructions," says Helen Ghiradella, a specialist in butterfly scale morphology at the State University of New York at Albany.
Crustaceans exhibit adaptive chromatic responses to alterations in background color as a consequence of the bidirectional movement of the brightly colored pigment granules present in their pigmentary effectors, or chromatosomes.
Pigment: The pigment granules may be absent as in gray hair or may be so dense that they obscure the inner structural detail of the hair specimen.
We read with interest the article on lipochrome pigment granules (LPGs) in the differential diagnosis of prostatic adenocarcinoma versus seminal vesicle-ejaculatory duct epithelium by Shidham and colleagues.
Within the chromatophores of many amphibians and fish, pigment granules move as independent, individual organelles (Rogers et al.
Pigment granules may be fine, coarse, obscure, or absent and may appear streaked or clumped.