Meaning of alleviator

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.
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