The process of igniting the propane fuel by use of the burner to heat the air inside the envelope

Normal combustion in which the oxident is molecular oxygen.

a process in which a substance reacts with oxygen to give heat and light

Heating steel to a temperature sufficiently close to the melting point to expose it to the danger of "burning." Such may be caused by the melting of the more fusible const, by the penetration of gases such as oxygen into the metal with consequent reactions, or perhaps by the segregation of elements already present in the metal.

A term used to describe the operation of joining two pieces of lead by melting them at practically the same instant so they may run together as one continuous piece. Usually done with mixture of oxygen and hydrogen or acetylene gases, hydrogen and compressed air, or oxygen and illuminating gas.

Decomposition of material by the application of heat and oxidation. Also applied to propellants and other pyrotechnic mixtures, though the proper term there is "reacting". Also often an element of the crime of arson.

A sensation of burning heat in joints or muscles or on skin. Felt after scratching of skin eruptions.