noun, noun which may take the genitive case particle 'no'
Rare term for monogamy; the more common word is 一夫一妻 (いっぷいっさい). Used in academic or formal contexts.
See also: 一夫一妻
単婚は一夫一妻の婚姻形態を指す。
Monogamy refers to the marriage system of one husband and one wife.