• synonyms


[lik-wi-duh s]
noun Physical Chemistry.
  1. (on a graph of temperature versus composition) the curve connecting the temperatures at which a liquid solution is in equilibrium with its vapor and with the solid solution.
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Compare solidus2

Origin of liquidus

From Latin, dating back to 1900–05; see origin at liquid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for liquidus

Historical Examples of liquidus

  • These curves are also called the "liquidus" and the "solidus" curve respectively.

    The Phase Rule and Its Applications

    Alexander Findlay

liquidus in Science


  1. The minimum temperature at which all components of a mixture (such as an alloy) can be in a liquid state. Below the liquidus the mixture will be partly or entirely solid. See illustration at eutectic. Compare solidus.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.