granule

n.

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

[Late Latin grānulum, diminutive of Latin grānum, grain.]

geology A particle size, typically 2 to 4 mm (0.787 to 0.157 4 in).

1. a small particle or grain.
2. a small pill made of sucrose.

• acidophil g's — granules staining with acid dyes.
• aleuronoid g's — colorless myeloid colloidal bodies found in the base of pigment cells.
• alpha g's — 1. oval granules found in blood platelets; they are lysosomes containing acid phosphatase.
— 2. large granules in the alpha cells of the islets of Langerhans; they secrete glucagon. — 3. acidophilic granules in the alpha cells of the adenohypophysis.
• amphophil g's — granules that stain with both acid and basic dyes.
• azur g's, azurophil g's — granules that stain easily with azure dyes; they are coarse, reddish granules and are seen in many lymphocytes.
• basophil g's — granules staining with basic dyes.
• beta g's — 1. granules in the beta cells of the islets of Langerhans that secrete insulin.
— 2. basophilic granules in the beta cells of the adenohypophysis.
• g. cell — the largest group of cells produced by the external germinal layer on the external surface of the embryonal cerebellum; they form the thick granular layer of the cerebellum; called also granule neurons.
• chromatic g's, chromophilic g's — see nissl bodies.
• cone g's — the nuclei of the visual cells in the outer nuclear layer of the retina which are connected with the cones.
• eosinophil g's — those staining with eosin. See also alpha granules (above).
• epsilon g. — see neutrophil granules (below).
• Grawitz's g's — minute granules seen in the erythrocytes in the basophilia of lead poisoning.
• iodophil g's — granules staining brown with iodine, seen in polymorphonuclear leukocytes in various acute infectious diseases.
• keratohyalin g. — keratin precursor; in the stratum granulosum of the epithelium.
• metachromatic g's — granules present in mast cells and many bacterial cells, having an avidity for basic dyes and causing irregular staining of the cell.
• mitochondrial g's — organelles in osteoblasts through which temporary calcium ion sequestration can be effected.
• g. neurons — see granule cell (above).
• neutrophil g's — neutrophilic granules from the protoplasm of polymorphonuclear leukocytes; called also epsilon granules.
• Nissl's g's — see nissl bodies.
• oxyphil g's — acidophil granules.
• pigment g's — small masses of coloring matter in pigment cells.
• primary g's — the peroxidase-positive granules of neutrophils, most prominent in the progranulocyte and early myelocyte stages.
• rod g's — the nuclei of the visual cells in the outer nuclear layer of the retina which are connected with the rods.
• secondary g's — the peroxidase-negative (‘specific’) granules seen in mature neutrophils.
• seminal g's — the small granular bodies in the semen.
• sulfur g's — see sulfur granule.
• toxic g's — dark-staining granules in neutrophils that contain peroxidase and acid hydrolases. They occur in inflammatory reactions.

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Dansk (Danish)
n. - lille korn, granula

Nederlands (Dutch)
korreltje, vlekje op fotosfeer van de zon

Français (French)
n. - granulé, grain, billes (de polystyrène)

Deutsch (German)
n. - Körnchen

Ελληνική (Greek)
n. - κόκκος, κοκκίδιο, σπυρί

Italiano (Italian)
granello

Português (Portuguese)
n. - grânulo (m)

Русский (Russian)
гранула, зернышко

Español (Spanish)
n. - gránulo

Svenska (Swedish)
n. - partikel

中文（简体）(Chinese (Simplified))
小粒, 颗粒, 细粒

中文（繁體）(Chinese (Traditional))
n. - 小粒, 顆粒, 細粒

한국어 (Korean)
n. - 낟알, 소립자

日本語 (Japanese)
n. - 小粒, 顆粒, 粒剤

العربيه (Arabic)
‏(الاسم) حبيبه‏

עברית (Hebrew)
n. - ‮גרגירון‬

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