The action of forcing someone or something to leave a place, especially an institution or organization. The act of ejecting or banishing someone as a punishment or disciplinary measure.
From Latin 'expulsio', from 'expellere' meaning 'to drive out' (ex- 'out' + pellere 'to drive'). Entered English in the 14th century, initially used in medical contexts for bodily discharge, later extended to institutional and social contexts.
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