congruent melting point

congruent melting point

[kən′grü·ənt ′melt·iŋ ‚pȯint]
(thermodynamics)
A point on a temperature composition plot of a nonstoichiometric compound at which the one solid phase and one liquid phase are adjacent.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.