nimbostratus

(nim′bō strāt′əs, -strat′əs)

noun

the type of extensive gray cloud that obscures the sun, found at low altitudes and consisting of dense, dark layers of water droplets, rain, or snow

Origin: ModL: see nimbus & stratus

See nimbostratus in American Heritage Dictionary 4

noun pl. nim·bo·stra·ti (-strāˈtī, -strătˈī)

A low, gray, often dark cloud that precipitates rain, snow, or sleet.

Origin:

Origin: nimb(us)

Origin: + stratus

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