- a small grain
- a small, grainlike particle or spot; specif., any of the small, bright areas on the sun's photosphere that last only a few minutes
Origin of granulefrom Late Latin granulum, diminutive of Classical Latin granum, grain
- A small grain or pellet; a particle.
- Geology A rock or mineral fragment larger than a sand grain and smaller than a pebble, between 2 and 4 millimeters in diameter.
- Astronomy One of the small, transient, luminous markings in the photosphere of the sun.
- Biology A cellular or cytoplasmic particle, especially one that stains readily.
Origin of granuleLate Latin grānulum diminutive of Latin grānum grain ; see g&rlowring;ə-no- in Indo-European roots.