Definition of oxyhydrogen in US English:

oxyhydrogen

noun

  • A flammable mixture of oxygen and hydrogen, used in brazing metals, etc. Usually attributive.

Origin

Early 19th century; earliest use found in Transactions of the Society of Arts. From oxy- + hydrogen.

Pronunciation

oxyhydrogen

/ˌɒksɪˈhʌɪdrədʒ(ə)n/