Pronunciation: (yOO-tek'tik), [key] Physical Chem.
1. of greatest fusibility: said of an alloy or mixture whose melting point is lower than that of any other alloy or mixture of the same ingredients.
2. noting or pertaining to such a mixture or its properties: a eutectic melting point.
a eutectic substance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.