hinge line

variants: or less commonly hinge

Definition of hinge line

1a : an imaginary line on the earth's surface which can be regarded as a boundary between a stable region and one undergoing upward or downward movement
b : a line around which one wall of a fault may appear to have rotated with respect to the other wall
2 : the dorsal edge or border of a bivalve shell on which the hinge is situated

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!

Learn More About hinge line

Dictionary Entries Near hinge line


hinge line

hinge on

See More Nearby Entries 

Statistics for hinge line

Cite this Entry

“Hinge line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hinge%20line. Accessed 23 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

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