alleviator

alleviator

[uh-lee-vee-ey-ter]
noun
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.

Origin:
1805–15; alleviate + -or2

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
alleviate (əˈliːvɪˌeɪt)
 
vb
(tr) to make (pain, sorrow, etc) easier to bear; lessen; relieve
 
[C15: from Late Latin alleviāre to mitigate, from Latin levis light]
 
 
allevi'ation
 
n
 
al'leviative
 
adj
 
al'leviator
 
n

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