Definition

The escape of gases from the combustion chamber of an engine into the crankcase, often due to a poor seal between the piston and cylinder wall.

Example

The mechanic noticed a significant amount of blowby, indicating that the engine might need repairs.

Conversation

Have you heard about the issues with blowby in older cars?

Yeah, I read it can really affect engine performance.

Exactly! It might even lead to more serious problems if not fixed.

Right, it's one of those things you shouldn't ignore.

Synonyms & Antonyms

Root Explanation

The word 'blowby' is formed from 'blow' (from Old English 'blāwan', meaning to emit air or breath) and 'by' (from Old Norse 'bý', meaning dwelling or place). The term 'blowby' refers to the phenomenon where gases escape from a system, often used in mechanical contexts, indicating a place where air or gas is emitted.

Memory Tip

Think of 'blow' as emitting air and 'by' as a place — so 'blowby' means a place where air or gas is emitted.

Visually Confused Words