朱砂 Traditional form: 朱砂 Pinyin (reading): zhūshā Definitions: cinnabar mercuric sulfide HgS also written 硃砂/朱砂 (zhūshā) Characters: 朱 - cinnabar, vermilion; surname 砂 - sand, pebbles, gravel; gritty Traditional characters: 朱 - cinnabar, vermilion; surname 砂 - sand, pebbles, gravel; gritty