liq·​ui·​dus | \ ˈlikwə̇dəs \
variants: or less commonly liquidus curve
plural -es

Definition of liquidus

: a curve usually on a temperature-composition diagram for a binary system that over a range of temperatures between the melting points of the pure components relates compositions of the liquid phase to the solid phase in equilibrium with the liquid phase and that indicates temperatures above which only the liquid phase can exist — compare solidus, solvus

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 liquidus

Latin liquidus liquid

Learn More About liquidus

Dictionary Entries Near liquidus

liquid sugar



See More Nearby Entries 

Statistics for liquidus

Cite this Entry

“Liquidus.” Dictionary, Merriam-Webster, Accessed 28 Nov. 2021.

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


Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Spell It

Can you spell these 10 commonly misspelled words?

Love words? Need even more definitions?

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