stratocumulus

/ˌstrætoʊˈkjumjələs/
noun
  1. A type of low, gray cloud that forms in large, rounded masses or rolls, often covering the whole sky and sometimes producing light rain or drizzle.
    • The sky was filled with stratocumulus clouds, blocking the sun but not threatening a storm.
    • A blanket of stratocumulus kept the temperature cool all afternoon.
    • Pilots often see stratocumulus layers when flying at low altitudes over the ocean.
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