This volume serves as a comprehensive lexicographical investigation into the evolution and application of the Latin language within British contexts from the 6th to the 16th centuries. Editor David Howlett and the British Academy team utilize an extensive array of primary manuscript and printed sources to document linguistic shifts, new word formations, and the integration of vernacular borrowings into the medieval Latin corpus.

Scholars and historians regard this dictionary as a foundational reference work for the study of medieval Latinity. Experts frequently note the academic density and precision of the entries, which provide critical context for researchers working with medieval British documents.