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Dictionary

al•le•vi•a•tor

Pronunciation: (u-lē'vē-ā"tur), [key]
—n.
1. a person or thing that alleviates.
2. (in a pipeline) an airtight box, having a free liquid surface, for cushioning the shock of water hammer.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

alleviative

all-expense

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