Definition

The process where fuel ignites in an engine before the spark plug fires, often due to excessive heat or pressure.

Example

Preignition can cause engine knocking and damage if not addressed.

Conversation

I read about preignition in engines the other day, and it sounds pretty serious.

Yeah, it can really affect performance if it happens.

Exactly! I didn't realize how much it could damage an engine.

For sure, it's something every car owner should be aware of.

Synonyms & Antonyms

Root Explanation

Preignition → It is formed from "pre-" (meaning before) and "ignition" (from Latin "ignitio", meaning to set on fire). The word "preignition" refers to the act of igniting or firing before the intended time or event.

Memory Tip

Think of something being set on fire "before" it is supposed to happen — that's what preignition means.

Visually Confused Words