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incongruent melting

American  
[in-kuhn-groo-uhnt mel-ting, -kong-groo-, -kuhng-groo-] / ˌɪn kənˈgru ənt ˈmɛl tɪŋ, -ˈkɒŋ gru-, -kəŋˈgru- /

noun

Chemistry.
  1. the melting of a solid compound in which the composition of the resultant liquid is different from that of the solid.


Etymology

Origin of incongruent melting

First recorded in 1900–05