mixtion

noun6

1. •
   (no longer used) The act or process of mixing; the state of being mixed or becoming mixed; a mixture.

   • Nor are there hardly any who either treat of mutation or mixtion of sexes, who have not left some mention of this point […] — 1646
2. •
   (no longer used) A compound of drugs; a medicinal concoction.
3. •
   (no longer used) A chemical compound.
4. •
   (no longer used) The addition of something as an ingredient; admixture; the presence of a heterogeneous element in a mixture or compound.
5. •
   (no longer used) In gilding, a mixture of amber, mastic, and asphalt used as a size or mordant for affixing gold leaf to wood or to distemper pictures.
6. •
   (no longer used) A kind of cement made of mastic, amber, etc., used as a mordant for gold leaf.