admix

from WordNet (r) 3.0 (2006)

admix
    v 1: mix or blend; "Hyaline casts were admixed with neutrophils"

from The Collaborative International Dictionary of English v.0.48

Admix \Ad*mix"\, v. t. [Pref. ad- + mix: cf. L. admixtus, p. p.
   of admiscere. See {Mix}.]
   To mingle with something else; to mix. [R.]
   [1913 Webster]