Definition of aluminothermy in US English:

aluminothermy

(also aluminothermie)

noun

Metallurgy
  • The production of high temperatures by the use of aluminium powder as a reducing agent, especially in a reaction with ferric oxide; reaction of aluminium in this way, with the liberation of heat.

Origin

Early 20th century; earliest use found in Engineering Magazine. From German Aluminothermie.