Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

pop valve

noun

Definition of pop valve 

: a safety valve designed to open when the pressure of a fluid exceeds the force exerted by the spring that normally keeps the valve closed

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!

History and Etymology for pop valve

pop entry 1

Keep scrolling for more

Learn More about pop valve

Dictionary Entries near pop valve

populous

Populus

pop-up

pop valve

popweed

pop wine

por

Statistics for pop valve

Look-up Popularity

Comments on pop valve

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

Show Comments  Hide Comments 

WORD OF THE DAY

rebuff

to reject or criticize sharply

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

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

Words at Play

Ask the Editors

Word Games