/o toh"nee euhn/ , adj.
1. of or pertaining to the German dynasty (Otto I, II, III) that ruled as emperors of the Holy Roman Empire from 962 to 1002.
2. pertaining to or designating the arts or culture of the Ottonian period, characterized chiefly by the development of forms derived from both Carolingian and Byzantine concepts: an Ottonian revival.
[ 1895-1900; Otton ( en ), pl. of Otto + -IAN ]