Present participle or gerund form of admix; the act of mixing together or combining things.
From admix (Latin admiscere) plus -ing, the present participle and gerund-forming suffix. The -ing suffix comes from Old English -ing and creates verbal nouns or continuous verb forms.
Admixing appears most often in scientific writing—'the admixing of materials' or 'admixing populations'—where the -ing form lets scientists talk about the process abstractly rather than the result.
Complete word intelligence in one call. Free tier — 50 lookups/day.