This dictionary is an indispensable guide to the study of Latin in the Middle Ages. Though it records the usage of Classical and Late Latin current in this period (sixth to sixteenth centuries), it presents most fully the medieval developments of the language as revealed in a rich variety of printed and manuscript sources. This fascicule, the fourth of ten, presents hundreds of new formations from other languages - some of the borrowings here recorded in Latin centuries before their appearance in written vernacular sources. Philologists will find many new formations from Latin roots, backformations from other parts of speech, and long entries for important verbs like facere, fieri and habere. Historians will find groups of words around feodum and homagium and homo, philosophers around genus and generalis, theologians around fides and gratia and hypostasis. There are large numbers of words of agricultural and technological interest and many words important in the development of English custom and law. Textual critics and editors will find hundreds of places in which printed texts have been clarified and corrected by manuscript readings.