mercury(I) chloride; calomel; mercurous chloride
Chemical term for Hg₂Cl₂. Used in chemistry and historical medical contexts.
Mercury(I) chloride was once used as a laxative.
Mercury(II) chloride (HgCl₂), a different oxidation state of mercury chloride.
Compound of 塩化 (chloride) + 第一 (first, i.e., monovalent) + 水銀 (mercury), following systematic chemical nomenclature.