- the time in European history between classical antiquity and the Italian Renaissance (from about 500 a.d. to about 1350): sometimes restricted to the later part of this period (after 1100) and sometimes extended to 1450 or 1500.
- (broadly) the period from the end of classical antiquity (or the deposition of the last W Roman emperor in 476 ad) to the Italian Renaissance (or the fall of Constantinople in 1453)
- (narrowly) the period from about 1000 ad to the 15th century