altostratus
[ al-toh-strey-tuh s, -strat-uh s ]
/ ˌæl toʊˈstreɪ təs, -ˈstræt əs /
noun, plural al·to·stra·tus. Meteorology.
a cloud of a class characterized by a generally uniform gray sheet or layer, lighter in color than nimbostratus and darker than cirrostratus: of medium altitude, about 8000–20,000 feet (2450–6100 meters).
Words nearby altostratus
alton,
alton towers,
altona,
altoona,
altophobia,
altostratus,
altrices,
altricial,
altrincham,
altruism,
altruist
Example sentences from the Web for alto-stratus
Alto-stratus is a grey or bluish veil through which the sun and moon are faintly visible, occasionally giving rise to coronæ.
Sounding the Ocean of Air |A. Lawrence RotchThrough openings in these clouds an upper layer of cirro-stratus or alto-stratus may almost invariably be seen.
British Dictionary definitions for alto-stratus
altostratus
/ (ˌæltəʊˈstreɪtəs, -ˈstrɑː-) /
noun plural -ti (-taɪ)
a layer cloud at an intermediate height of about 2400 to 6000 metres (8000 to 20 000 feet)
Scientific definitions for alto-stratus
altostratus
[ ăl′tō-străt′əs ]
Plural altostrati (ăl′tō-străt′ī′)
A mid-altitude cloud that extends in flat, smooth sheets or layers of varying thickness. Altostratus clouds generally form between 2,000 and 6,100 m (6,560 and 20,000 ft) and often produce long, steady rain showers. See illustration at cloud.