A. B., Artium Baccalaureus. Bachelor of Arts. In England, B. A.
A. D., Anno Domini. In the Year of our Lord.
Ad. lib., or ad. lib., Ad libitum. At pleasure.
Æt., Ætatis. Of age; aged.
A. M., Ante Meridiem. Before noon.
A. M., Artium Magister. Master of Arts. In England, M. A.
A. U. C., Anno Urbis Conditæ. In the year from the Building of the City (Rome).
D. C. L. Doctor of Civil Law.
D. D., Divinitatis Doctor. Doctor of Divinity.
D. D. S. Doctor of Dental Surgery.