Medieval Latin was the form of
Latin used in the
Middle Ages, primarily as a medium of scholarly exchange and as the
liturgical language of the medieval
Roman Catholic Church, but also as a language of science, literature, law, and administration. Despite the clerical origin of many of its authors, Medieval Latin should not be confused with
Ecclesiastical Latin. There is no real consensus on the exact boundary where
Late Latin ends and Medieval Latin begins. Some scholarly surveys begin with the rise of early
Christian Latin in the middle of the 4th century, others around the year 500.
[1]Medieval Latin was characterized by an enlarged vocabulary, which freely borrowed from other sources. It was heavily influenced by the language of the Vulgate, which contained many peculiarities alien to Classical Latin that were the consequence of more or less direct translation from Greek and Hebrew; these peculiarities were mirrored not only in its vocabulary, but also in its grammar and syntax. Greek provided much of the technical vocabulary of Christianity. The various Germanic languages spoken by the Germanic tribes, who invaded western Europe, were also major sources of new words. Germanic leaders became the rulers of western Europe, and words from their languages were freely imported into the vocabulary of law. Other more ordinary words were replaced by coinages from Vulgar Latin or Germanic sources because the classical words had fallen into disuse.
Latin was also spread to areas such as Ireland and Germany, where Romance languages were not spoken and which had never known Roman rule. Works written in these lands where Latin was a learned language with no relation to the local vernacular also influenced the vocabulary and syntax of medieval Latin.
Since abstract subjects like science and philosophy were communicated in Latin, the Latin vocabulary developed for them is the source of a great many technical words in modern languages. English words like abstract, subject, communicate, matter, probable and their cognates in other European languages generally have the meanings given to them in medieval Latin.