back pressure

noun

1

: residual pressure on the exhaust side of a steam-engine piston against which the steam on the intake side must work

2

: opposition to flow of a liquid or gas due to friction, inertia, gravity, or other cause

Word History

First Known Use

1848, in the meaning defined at sense 1

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Rhymes for back pressure

• refresher
• acupressure
• overpressure
• flesher
• fresher
• thresher