com·pul·so·ry 
(kəm-pŭlsə-rē)
(kəm-pŭlsə-rē)adj.
1. Obligatory; required: a compulsory examination.
2. Employing or exerting compulsion; coercive.
n. often cumpulsories
Sports
Sports
An element, such as a dive or school figure, required of all competitors in an athletic competition.
com·pulso·ri·ly adv.
com·pulso·ri·ness n.