GRA meaning in Medical ?

What is Granule mean?

A granule is a large particle or grain. It can refer to:

Granule (cell biology), any of several submicroscopic structures, some with explicable origins, others noted only as cell type-specific features of unknown functionAzurophilic granule, a structure characteristic of the azurophil eukaryotic cell typeChromaffin granule, a structure characteristic of the chromophil eukaryotic cell type.Astrophysics and geology:Granule (solar physics), a visible structure in the photosphere of the Sun arising from activity in the Sun's convective zoneMartian spherules, spherical granules of material found on the surface of the planet MarsGranule (geology), a specified particle size of 2–4 millimetres (-1 to -2 on the φ scale)Granule, in pharmaceutical terms, small particles gathered into a larger, permanent aggregate in which the original particles can still be identifiedGranule (Oracle DBMS), a unit of contiguously allocated virtual memoryGranular synthesis of sound reference