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aluminum sulfate
alumna
alumnus
alumroot
alunite
alveolar
alveolar ridge
alveolectomy
alveoli
alveolitis
alveolus
Alvin
always
always-on
Alyce clover
alyssum
Alzheimer’s disease
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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
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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