from the GNU version of the Collaborative International Dictionary of English
- n. Large balls or rolls of dark cloud which frequently cover the whole sky, esp. in winter, and give it at times an undulated appearance.
from The Century Dictionary and Cyclopedia
- n. A stratum of low cloud consisting of separate irregular masses; a cloud of the layer type, but not sufficiently uniform to be pure stratus. Also called cumulo-stratus.
- n. See cloud, 1.
Sorry, no etymologies found.
There was little wind, and the few strato-cumulus clouds which were visible showed great stretches of azure-blue sky between them.
As the Division bomber stream of probably fifteen groups (360 airplanes) flew eastward, a great wall of strato-cumulus clouds confronted us.
When lower and in heavy roundish masses it's called alto-cumulus, which is the fifth on the list, and when it is lower still and looks like a lot of great blue-gray footballs wedged closely together it is known as strato-cumulus. "