the act of mixing; state of being mixed.
anything added; any alien element or ingredient: This is a pure product; there are no admixtures.
a compound containing an admixture.

1595–1605; < Latin admixt(us) + -ure, on the model of mixture Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
admixture (ədˈmɪkstʃə)
1.  a less common word for mixture
2.  anything added in mixing; ingredient

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

c.1600, with -ure, from admix (1530s), a back-formation from admixt (early 15c.), from L. admixtus "mixed with," pp. of admiscere "to add to by mingling, mix with," from ad- "to" + miscere "to mix" (see mix). M.E. admixt was mistaken as a pp. of a (then) non-existent M.E. *admix.
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica


marriage or cohabitation by persons of different race. Theories that the anatomical disharmony of children resulted from miscegenation were discredited by 20th-century genetics and anthropology. Although it is now accepted that modern populations are the result of the continuous mixing of various populations since prehistoric times, taboos on miscegenation-in some instances legally enforced-have existed and continue to exist in many race-based societies. In South Africa the official policy of apartheid for many years included legal prohibitions on miscegenation. In the United States many states had laws against interracial marriage until the Supreme Court declared them unconstitutional in 1967.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Each odor admixture is primarily influenced by seasonal changes in local
  vegetation and temperature.
Gesturing overhead, he points out an admixture of bulbs.
They have all his faults and only a small and occasional admixture of his
  strength and resource.
There is, however, in these nerves a certain admixture of medullated fibers.
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