RESPONDENT (from Lat. respondere, to answer), strictly, one who answers; in law one called upon to answer a petition or other proceeding. In a matrimonial cause the defendant in the suit is called the respondent. The defendant to a quarter sessions appeal is called the respondent, and so generally in appeals is the party, whether plaintiff or defendant, against whom the appeal is brought.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)