(ˈ)ä|tōnēən adjective
Usage: usually capitalized
Etymology: German Otton en Ottos, kings of Germany and Holy Roman Emperors ( Otto I died 973, Otto II died 983, Otto III died 1002) + English -ian
: of, relating to, or characteristic of the reigns (936-1002) of the first three Ottos of Germany and the Holy Roman Empire or of the arts that flourished in Germany in this period
Ottonian bronze doors in Hildesheim and Augsburg — Art Bulletin