- December
- December [dē sem′bər, disem′bər]n.[ME & OFr Decembre < L December < decem, TEN (+ -ber < ?): so named as the tenth month of the ancient Roman year, which began with March]the twelfth and last month of the year, having 31 days: abbrev. Dec. or D.
English World dictionary. V. Neufeldt. 2014.