1. the act of mixing together

e.g. paste made by a mix of flour and water
the mixing of sound channels in the recording studio

Synonym: mixcommixtureadmixturemixturemixing

2. an additional ingredient that is added by mixing with the base

e.g. the growing medium should be equal parts of sand and loam with an admixture of peat moss and cow manure
a large intermixture of sand

Synonym: admixture

3. any foodstuff made by combining different ingredients

e.g. he volunteered to taste her latest concoction
he drank a mixture of beer and lemonade

Synonym: concoctionmixture