Definition of liquidus in English:

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Pronunciation: /ˈlikwidəs/

noun (plural liquidi /-ˌdī/)

(also liquidus curve) Chemistry A curve in a graph of the temperature and composition of a mixture, above which the substance is entirely liquid.
Example sentences
  • We quantitatively determined the degree of mixing nonideality by fitting the experimental liquidus and solidus curves to a model based on regular solution theory.
  • Large, insoluble intermetallic particles that are present or form in the temperature range between liquidus and solidus reduce feeding.
  • Total melting is not possible, that is, raising the temperature of mantle lherzolite to its liquidus (the temperature at which it is completely melted), requires too much heat, even when significant amounts of volatiles are present.


Latin, literally 'liquid'.

For editors and proofreaders

Syllabification: liq·ui·dus

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