IPA: /ˈfændəm/
KK: /ˈfændəm/
A group of people who are very enthusiastic about a particular sport, activity, or famous person.
The fandom for the new movie has grown rapidly since its release.
Fandom is formed from "fan" (derived from the word "fanatic", which comes from Latin "fanaticus", meaning inspired by a deity or enthusiastic) and "-dom" (a suffix meaning state or condition). The word "fandom" refers to the state or condition of being an enthusiastic fan of a particular person, group, or work, especially in popular culture.
Think of being a 'fan' (someone enthusiastic) and the '-dom' meaning a state or condition — this helps you remember that 'fandom' is the state of being an enthusiastic fan.