## Meanings
1. The process of burning, in which a substance reacts with oxygen to produce heat and light.
2. A state of violent excitement, tumult, or disturbance.

## Examples
- Combustion of fossil fuels releases carbon dioxide into the air.
- The unfair ruling threw the whole crowd into combustion.

## Derived Forms
- autocombustion
- combustionary
- moxibustion
- noncombustion
- postcombustion
- pre-combustion
- precombustion
- recombustion

## Related Forms
- combustible
- combustive
- combustor

## Roots and Affixes
- Root: combustio

## Etymology
From Old French combustion, from Latin combustio, from comburere (“to burn”), itself from the intensifying prefix com- + the root burere (a faulty sep. of amburere "to burn around", itself from ambi- + urere "to burn, singe"); equivalent to combust + -ion.

## AI Etymology
Combustion is from Old French combustion, from Latin combustio, from comburere (“to burn”), itself from the intensifying prefix com- + the root burere (a faulty sep. of amburere "to burn around", itself from ambi- + urere "to burn, singe"); equivalent to combust + -ion. The analysis is mainly morphological: the modern nominal form is built from the named base and affix. Important recorded forms include combustio (Latin). Current senses include the process of burning, in which a substance reacts with oxygen to produce heat and light and a state of violent excitement, tumult, or disturbance. The wider family includes derived forms such as autocombustion, combustionary, moxibustion, noncombustion, and postcombustion; related words such as combustible, combustive, and combustor.

## Topics
- Cause, Change & Process
- Word Formation & Derivatives

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