Where does “Potterdom” come from?

Potterdom (English) comes from English DOM, from English dominance, from English -ance, from Middle English -aunce, from Old French -ance, from Latin -ia, from Latin -ius, from Proto-Italic -jōs — Creates adjectives from noun or verb stems.

Potterdom (English): The fandom or sphere of the "Harry Potter" series...

Definitions

  1. The fandom or sphere of the "Harry Potter" series...

Ancestry of “Potterdom”, step by step

Potterdom traces back through two separate lines of ancestry.

via English DOM

StepLanguageWordMeaning
1EnglishDOMInitialism of date of marriage; Initialism of...
2EnglishdominanceThe state of being dominant; of prime importance;...
3English-anceAdded to an adjective or verb to form a noun...
4Middle English-aunceForms nouns indicating states or processes, usually from verbs or other nouns; -ance
5Old French-anceance (suffix used to form nouns)
6Latin-iaUsed to form a feminine abstract noun, usually...
7Latin-iusforming adjectives from nouns; nominative neuter...
8Proto-Italic-jōsForms comparative adjectives
9Proto-Indo-European-yósCreates adjectives from noun or verb stems

via English Potter

StepLanguageWordMeaning
1EnglishPotterA person from Stoke-on-Trent; someone connected...
2EnglishpoteTo push, thrust; To poke
3Middle Englishpoten
4Old Englishpotianto thrust, push
5Proto-Germanicputōn
6Proto-Germanicputōnąto stick, stab, poke; to push
7Proto-Indo-Europeanbud-to shoot, sprout; to swell
Every word from Proto-Indo-European -yós