1. 燃烧;燃烧过程
Combustion is the act of burning something or the process of burning.

1. the act of burning something

e.g. the burning of leaves was prohibited by a town ordinance

Synonym: burning

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

Synonym: burning

3. a state of violent disturbance and excitement

e.g. combustion grew until revolt was unavoidable