The kanji 姻 generally means "marriage," "matrimony," or "marriage relationship." It specifically refers to the bond created by marriage, often implying the connection between a husband and wife. It also suggests the relationships that extend from marriage, such as the relationship between in-laws.

・On-yomi (音読み): イン (in) ・Kun-yomi (訓読み): None, as the primary meaning is abstract rather than concrete.

⚫︎ 婚姻 (kon'in) Translation: Marriage; matrimony. ⚫︎ 姻戚 (inshaku) Translation: Relatives by marriage; in-laws. ⚫︎ 婚姻届 (kon'in todoke) Translation: Marriage registration form.

The kanji 姻 is a 形声文字 (keisei moji), which means it is a character that combines a semantic component (a part of the character that provides meaning) with a phonetic component (a part of the character that indicates the pronunciation). The left side is 女 (onna), meaning "woman," and the right side is 因 (in), which means "cause" or "reason" and also provides the sound. Together, they suggest a relationship that is caused by a woman, referring to marriage. The formation and connection of two people via the "woman" or "wife" represents the root of the marital union.