- department [dē pärt′mənt, dipärt′mənt]n.[ME & OFr departement < departir: see DEPART]1. a separate part, division, or branch, as of a government, business, or school [the police department, the accounting department, the history department]2. a field of knowledge or activity [rewriting is his department ]☆ 3. a specialized column or section appearing regularly in a periodical4. an administrative district in France, Greece, or certain Latin American countries
English World dictionary. V. Neufeldt. 2014.