a. [ Oxy- (a) + hydrogen. ] (Chem.) Of, pertaining to, or consisting of, a mixture of oxygen and hydrogen at over 5000° F. [ Webster 1913 Suppl. ]

Oxyhydrogen blowpipe. (Chem.) See Blowpipe. --
Oxyhydrogen microscope, a form of microscope arranged so as to use the light produced by burning lime or limestone under a current of oxyhydrogen gas. [ 1913 Webster ]

. A light produced by the incandescence of some substances, esp. lime, in the oxyhydrogen flame. Coal gas (producing the oxygas light), or the vapor of ether (oxyether light) or methylated spirit (oxyspirit light), may be substituted for hydrogen. [ Webster 1913 Suppl. ]