1. plural of combustion; instances or processes of burning or rapid chemical reaction with oxygen that produces heat and light
Usage: countable noun; typically used in technical, scientific, or industrial contexts
2. plural of combustion; instances of violent agitation, turmoil, or conflict
Usage: figurative use; less common than the chemical sense

Examples

• The engine undergoes multiple combustions per second to generate power.
• Incomplete combustions in the furnace led to excess emissions.
• The combustions of different fuels release varying amounts of energy.
• Political combustions erupted across the region during the crisis.
• Engineers studied the combustions occurring in the rocket engine.
• The combustions of coal and natural gas are major sources of electricity.