occupationoccupationoccupationsnoun1(pluraloccupations) (formal) a job: What is your mother's occupation?2(pluraloccupations) something that you do in your free time: Fishing is his favourite occupation.3(no plural) when a country or army takes or has control of an area or building: the Roman occupation of Britain4(no plural) (formal) the fact of living in a house, room, etc.: The new house is now ready for occupation.