Definition that contains cumulus cloud
- thunderhead a rounded projecting mass of a cumulus cloud with shining edges; often appears before a thunderstorm
- cumuliform shaped like a cumulus cloud
- altocumulus cloud a cumulus cloud at an intermediate altitude of 2 or 3 miles
- altocumulus a cumulus cloud at an intermediate altitude of 2 or 3 miles
- mackerel sky a sky filled with rows of cirrocumulus or small altocumulus clouds