The Collaborative International Dictionary
Commingler
Commingler \Com*min"gler\, n. One that commingles; specif., a device for noiseless heating of water by steam, in a vessel filled with a porous mass, as of pebbles.
Wiktionary
commingler
n. 1 One who, or that which, commingles. 2 A device for noiseless heating of water by steam in a vessel filled with a porous mass, as of pebbles.