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hypereutectoid

or hy·per·eu·tec·tic

[hahy-per-yoo-tek-toid]
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adjective Metallurgy.
  1. (of an alloy) having more of the alloying element than the eutectoid composition.
  2. (of steel) having more carbon than the 0.8 percent of eutectoid steel.
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Origin of hypereutectoid

First recorded in 1910–15; hyper- + eutectoid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for hypereutectic

hypereutectic

hypereutectoid

adjective
  1. (of a mixture or alloy with two components) containing more of the minor component than a eutectic mixtureCompare hypoeutectic
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012