inquartation

[ in-kwawr-tey-shuh n ]
/ ˌɪn kwɔrˈteɪ ʃən /

noun

(in assaying) the addition of silver to a gold-silver alloy in order to facilitate the parting of the gold by nitric acid.

Origin of inquartation

1880–85; perhaps < French inquartation. See in-2, quarter, -ation