Dictionary
Wels'bach burn"er
Pronunciation: (welz'bak, -bäk; Ger. vels'bäkh), [key] Trademark.
a brand of gaslight consisting essentially of a Bunsen burner on which an incombustible mantle
(Wels'bach man"tle) composed of thoria and some ceria becomes brilliantly incandescent when exposed to flame.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.