or hy·per·eu·tec·tic


adjective Metallurgy.

(of an alloy) having more of the alloying element than the eutectoid composition.
(of steel) having more carbon than the 0.8 percent of eutectoid steel.

Origin of hypereutectoid

First recorded in 1910–15; hyper- + eutectoid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019