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alto-
alto clef
alto-relievo
altocumulus
altogether
altoist
Alton
Altoona
altostratus
altricial
altruism
ALU
alu
alu sequence family
alula
alum (1)
alum (2)
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altostratus
al·to·stra·tus [ àltō stráytəss, àltō stráttəss ] (plural al·to·stra·ti [ àltō stráy tī ])


noun 
Definition:
 
gray layered cloud: grayish cloud in thin sheets or layers of uniform appearance, through which the Sun can be seen
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