California Code, Penal Code - PEN § 13700

(a) “Abuse” means intentionally or recklessly causing or attempting to cause bodily injury, or placing another person in reasonable apprehension of imminent serious bodily injury to himself or herself, or another.

(b) “Domestic violence” means abuse committed against an adult or a minor who is a spouse, former spouse, cohabitant, former cohabitant, or person with whom the suspect has had a child or is having or has had a dating or engagement relationship. For purposes of this subdivision, “cohabitant” means two unrelated adult persons living together for a substantial period of time, resulting in some permanency of relationship. Factors that may determine whether persons are cohabiting include, but are not limited to, (1) sexual relations between the parties while sharing the same living quarters, (2) sharing of income or expenses, (3) joint use or ownership of property, (4) whether the parties hold themselves out as spouses, (5) the continuity of the relationship, and (6) the length of the relationship.

(c) “Officer” means any officer or employee of a local police department or sheriff's office, and any peace officer of the Department of the California Highway Patrol, the Department of Parks and Recreation, the University of California Police Department, or the California State University and College Police Departments, as defined in Section 830.2, a peace officer of the Department of General Services of the City of Los Angeles, as defined in subdivision (c) of Section 830.31, a housing authority patrol officer, as defined in subdivision (d) of Section 830.31, a peace officer as defined in subdivisions (a) and (b) of Section 830.32, or a peace officer as defined in subdivision (a) of Section 830.33.

(d) “Victim” means a person who is a victim of domestic violence.