Low Latin,

Chambers's Encyclopaedia, Volume 6: Humber to Malta, p. 733

Low Latin, a term often applied loosely to the Latin spoken and written after the fall of the Roman empire, as well as during the middle ages. The process of deterioration from classical models had already begun even in the time of Cicero, but it rapidly grew until were formed gradually in different divisions of the dismembered empire those distinct varieties out of which grew the modern Romance tongues. See ROMANCE LANGUAGES.

Source scan(s): p. 0748