Definition of granule Granule

/gɹæˈnjʌl/ - [granyul] - gran•ule

We found 12 definitions of granule from 7 different sources.

What does granule mean?

Noun Plural: granules
granule - a tiny grain
		grain the direction, texture, or pattern of fibers found in wood or leather or stone or in a woven fabric; "saw the board across the grain"
		microsome a tiny granule in the cytoplasm that is where protein synthesis takes place under the direction of mRNA
		chondrule small granule (of e.g. chrysolite) found in some meteoric rocks

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granule (Noun)
A tiny grain, a small particle.
granule (Noun)
A small structure in a cell.
granule (Noun)
A particle from 2 to 4 mm in diameter, following the Wentworth scale .
granule (Noun)
A small mark in the photosphere of the sun caused by convection currents. See also Wikipedia:Granule solar physics .

granule
A small particle.
granule
A particle from 2 to 4 mm in diameter, following the Wentworth scale.

granule
gran′ūl, n. a little grain: a fine particle.—adjs. Gran′ūlar, Gran′ūlary, Gran′ūlose, Gran′ūlous, consisting of or like grains or granules.—adv. Gran′ūlarly.—v.t. Gran′ūlāte, to form or break into grains or small masses: to make rough on the surface.—v.i. to be formed into grains.—adj. granular: having the surface covered with small elevations.—n. Granūlā′tion, act of forming into grains, esp. of metals by pouring them through a sieve into water while hot: (pl.) the materials of new texture as first formed in a wound or on an ulcerated surface.—adjs. Granūlif′erous; Gran′ūliform.—n. Gran′ūlīte, a schistose but sometimes massive aggregate of quartz and orthoclase with garnets. [L. granulum, dim. of granum, grain.]

Granule is a generic term used for a small particle or grain. The generic term is used in a lot of contexts.
cell biology
In cell biology, a granule can be any structure barely visible by light microscopy. The term is most often used to describe a secretory vesicle.

Leukocytes.

A group of leukocytes called granulocytes contain granules and play an important role in the immune system. The granules of certain cells, such as Natural Killer Cells, contain components which can lead to the lysis of neighboring cells.

Platelets.

The granules of platelets are classified as dense granules and alpha granules.