镁盐 měiyán magnesium salt Origin Definitions Defs Strokes Stroke Words Sentences Sents 镁 鎂 měi noun magnesium the chemical element with the symbol Mg; a lightweight, silvery-white metal used in fireworks, flares, and aircraft alloys盐 鹽 yán noun salt (chemistry) (bound form) any chemical compound formed from the reaction of an acid with a base, consisting of a metal ion and an acid radical