IPA: /ˈkaɪzərˌdoʊm/
KK: /ˈkaɪzərˌdɔm/
The position or status of being a kaiser, which is a German emperor.
The kaiserdom of Germany was a significant part of its history during the 19th century.
Kaiserdom is formed from "Kaiser" (from German, meaning emperor) and "-dom" (from Old English "dōm", meaning state or condition). The word refers to the state or condition of being an emperor or the realm ruled by an emperor.
Think of 'Kaiser' meaning emperor and '-dom' indicating a state or condition — this helps you remember that 'kaiserdom' refers to the realm or state of an emperor.