Hocus pocus (magic) derived from the Protoslavic word "kusiti", which is itself derived from Gothic "kausajn" meaning "to try", "to attempt". This may indicate that the wording belongs to the alchemy kitchen and court of Rudolf II, Holy Roman Emperor (1552 – 1612). Also, "hocus" may mean "to cheat" in Latin or a distorted form of the word "hoc", "this". Combination of the two words may give a sense, especially both meanings together "this attempt/experiment" and "cheated attempt/experiment". According to the Oxford English Dictionary the term originates from "hax pax max Deus adimax", a pseudo-Latin phrase used as a magical formula by conjurors.
Latin Wikipedia When occasionally a term for a modern concept cannot be found, the customary practice is to do exactly what most other languages do: to borrow an international word (often from a Romance language or English). Such direct borrowing was done for the particle names and and for the unit of temperature . The word is given a Latin morphology if this can be done easily, or, if not, used unchanged in its foreign form; but many international words already have a Latin or Graeco-Latin appearance, because Greek and Latin have always served as sources of new scientific terminology. Vicipaedia made