from Latin pacificat-, past ppl. stem of pacificare (to make peace, to pacify)
“…It mitigateth anger, letificateth those that bee sad, pacificateth such as are at discord. It temperateth choler, and (to conclude all in a word) it expelleth all vagrant, wandring, and imaginary cogitations whatsoeuer…”
From: The Secrets of Nvmbers.
According to Theologicall, Arithmeticall, Geometricall and Harmonicall Computation
By William Ingpen, 1624