Pontifex maximus pointed out that the term existed before there were any bridges in Rome and derived the word from Old Latin "pontis" (sic) meaning a powerful or absolute master, while others derived it from "potis facere" in the sense of "able to sacrifice". The last derivation is mentioned also by Varro, who rejected it, but it was the view of Pontifex Maximus Quintus Scaevola. Others have held that the word was originally "pompifex" (leader of public processions). The word "pons" originally meant "way" and "pontifex" would thus mean "maker of roads and bridges". Another opinion is that the word is a
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