Admixture, n.
Etymology: [L. admiscere, admixtum, to admix; ad + miscere to mix. See Mix.]
1. The act of mixing; mixture.
2. The compound formed by mixing different substances together.
3. That which is mixed with anything.
Shades of meaning
Fernald has no entry of its own for admixture; he lists it under alloy.
Where he writes about it:
Adulteration, debasement, and deterioration are always used in the bad sense; admixture is neutral, and may be good or bad; alloy is commonly good in the literal sense. — from alloy
Antonyms
none given