- noun suffix
Etymology: Middle English, from Old English -dōm; akin to Old High German -tuom -dom, Old English dōm judgment — more at doom
a. dignity ; office <dukedom> b. realm ; jurisdiction <kingdom> 2. state or fact of being <freedom> 3. those having a (specified) office, occupation, interest, or character <officialdom>
New Collegiate Dictionary. 2001.