CORESPONDENT

corespondent, co-respondent

(noun) the codefendant charged with adultery with the estranged spouse in a divorce proceeding

Source: WordNet® 3.1

Etymology

Noun

corespondent (plural corespondents)

(legal) One of two or more persons against whom a lawsuit is made; but especially a person charged with committing adultery with the defendant in a divorce proceeding.

Source: Wiktionary

Co`-re*spond"ent (k`rr-spnd"ent), n. (Law)

Definition: One who is called upon to answer a summons or other proceeding jointly with another.

Source: Webster’s Unabridged Dictionary 1913 Edition