Utah Code § 81-4-401
§ 81-4-401. Definitions for part.
As used in this part: (1) "Cohabitation" means the same as the term, "cohabit," is defined in Section 81-4-501. (2) "Mandatory courses" means: (a) the mandatory divorce orientation course described in Section 81-4-105; and (b) the mandatory parenting course described in Section 81-9-103. (3) "Petitioner" means the individual who brings a petition for divorce. (4) "Respondent" means the individual against whom a petition for divorce is brought.