This dictionary is an indispensable guide to the study of the Latin Middle Ages. It records the continuing usage of classical and late Latin in this period (6th-16th centuries), but it presents most fully the medieval developments of the language, drawing on a rich variety of printed and manuscript sources. Many new formations from other languages are revealed - some of the borrowings recorded in Latin centuries before their appearance in written vernacular sources. Due to the high number of entries for P, this letter is being spread over four fascicules.