正室 せいしつ Meanings Noun legal wife (of a noble) (as opposed to a concubine) See also: 側室 (そくしつ). See also: 本妻 (ほんさい). room for receiving guests See also: 表座敷 (おもてざしき). heir; successor Kanji 正 correct. Read as セイ. 室 room. Read as シツ. Words containing 正室 校正室 (こうせいしつ) proofroom Jinuma: Japanese Dictionary · Word lists