## Meanings
1. A machine that turns fuel or power into movement, used to drive vehicles and other machines.
2. A piece of software that performs a particular technical task.
3. Something that drives growth or change forward.

## Examples
- The car wouldn't start because the engine was broken.
- He improved the search engine to return faster results.
- Small businesses are often the engine of the economy.

## Synonyms
- locomotive
- motor

## Derived Forms
- bullgine
- engine-generator
- engine-rich
- engine-turned
- engineer
- engineless
- enginelike
- engineman
- enginer
- enginery
- in-engine
- microengine

## Related Forms
- engineer
- genius
- ingeniosity
- ingenious

## Roots and Affixes
- Root: *ǵenh₁-
- Root: engyn
- Root: engine
- Root: engin
- Root: ingenium

## Etymology
From Middle English engyn, from Anglo-Norman engine, Old French engin (“skill, cleverness, war machine”), from Latin ingenium (“innate or natural quality, nature, genius, a genius, an invention, (in Late Latin) a war-engine, battering-ram”), related to ingignō (“to instil by birth, implant, produce in”). Compare gin, ingenious, engineer.

## AI Etymology
Engine comes from Middle English engyn, from Anglo-Norman engine, Old French engin (“skill, cleverness, war machine”), from Latin ingenium (“innate or natural quality, nature, genius, a genius, an invention, (in Late Latin) a war-engine, battering-ram”), related to ingignō (“to instil by birth, implant, produce in”). Compare gin, ingenious, engineer. In current use, the main senses are “A machine that turns fuel or power into movement, used to drive vehicles and other machines” and “A piece of software that performs a particular technical task”.

## Topics
- Transportation
- Tools, Machines & Construction

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