Hypertext Webster Gateway: "purifier"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Purifier \Pu"ri*fi`er\, n.
One who, or that which, purifies or cleanses; a cleanser; a
refiner.
From WordNet (r) 1.7 (wn)
purifier
n : an apparatus for removing impurities
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