Emily Dickinson Lexicon

DO-CI-MAS'TIC, a. [Gr. δοκιμαςικος from δοκιμαζω, to try, essay, examine, from δοκιμος, proved, from δοκεω, to prove. Ch. רוק. Class Dg, No. 9.]

Properly, essaying, proving by experiments, or relating to the assaying of metals. The docimastic art is otherwise called metallurgy. It is the art of assaying metals, or the art of separating them from foreign matters, and determining the nature and quantity of metallic substances contained in any ore or mineral. – Lavoisier.