I. kəmˈpəls(ə)rē, -ri adjective
Etymology: Medieval Latin compulsorius coercive, from Latin compulsus (past participle of compellere ) + -orius -ory
1. : demanded, directed, or designated by authority : enforced , mandatory
compulsory retirement
compulsory vaccination
fees compulsory for all applicants
2. : having the power of compulsion : coercive , compelling
compulsory measures
3.
a. of education : requiring or insuring under law a minimum literary level and usually promoted in the case of minors by attendance of an authorized school up to a specified age limit
b. : obligatory especially for the fulfillment of degree or graduation requirements
for science majors biology and astronomy are compulsory
II. noun
( -es )
Etymology: Medieval Latin compulsorium, from neuter of compulsorius, adjective
archaic : a measure or means (as a legal injunction) compelling obedience