demineralizer

[ dee-min-er-uh-lahy-zer ]
/ diˈmɪn ər əˌlaɪ zər /

noun

an instrument, apparatus, or chemical used to remove minerals from water.

Origin of demineralizer

First recorded in 1955–60; de- + mineralize + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019