back pressure

noun

Definition of back pressure

  1. 1 :  residual pressure on the exhaust side of a steam-engine piston against which the steam on the intake side must work

  2. 2 :  opposition to flow of a liquid or gas due to friction, inertia, gravity, or other cause

There's more!

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!
Already a subscriber? Log in.

1848

First Known Use of back pressure

1848


Seen and Heard

What made you want to look up back pressure? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!