say it: kuhm-PUHL-sur-ee
compulsory is an adjective meaning "required by rule". It carries one recorded sense.
required by rule
“in most schools physical education is compulsory”
“attendance is mandatory”
“required reading”
Definitions, synonyms and semantic relations for compulsory come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.