accretion
The growth of a cloud droplet or of a larger, precipitating drop, due to the addition of minuscule supercooled water droplets, which freeze immediately on colliding with it, increasing its mass and volume.
The growth of a cloud droplet or of a larger, precipitating drop, due to the addition of minuscule supercooled water droplets, which freeze immediately on colliding with it, increasing its mass and volume.