regenerator
[ ri-jen-uh-rey-ter ]
/ rɪˈdʒɛn əˌreɪ tər /
noun
a person or thing that regenerates.
(in a regenerative furnace) a chamber filled with checkerwork that is repeatedly heated by exhaust gases in order to heat air that is passed through it.
Origin of regenerator
First recorded in 1730–40;
regenerate +
-or2