stratus

A low-altitude cloud formation consisting of a horizontal layer of gray clouds.

See cloud, 1.

A continuous horizontal sheet of cloud, generally of uniform thickness.

A form of clouds in which they are arranged in a horizontal band or layer. See cloud.

A principal, low-level cloud type in the form of a gray layer with a rather uniform base, usually not associated with precipitation, and capable of producing corona phenomena and a weak, uniform luminance; abbreviated St.

a large dark low cloud