Web Dictionary Definition -
fans collectively, as of a motion-picture star or a professional game or sport.
Urban Dictionary Definition (1) -
The community that surrounds a tv show/movie/book etc. Fanfiction writers, artists, poets, and cosplayers are all members of that fandom. Fandoms often consist of message boards, livejournal communities, and people.
The Harry Potter fandom has some of the most diverse fans, from eight year olds to thirty somethings.
Urban Dictionary Definition (2) -
A cult that will destory your life
I have 17 fandoms... DO YOU KNOW HOW MANY FEELS I GET A NIGHT
Yahoo Answers Definition -
A fandom is usually a group of people who all like the same work of fiction. Example: Doctor Who fandom are all fans of the show Doctor Who
A ship means relationship. Maybe you like 2 characters on the show being together. That would be the ship you like.
As before, if you comment your OWN definitions of a fandom, we will add them below for everyone to read. Thanks!! - Mirlotta, HeartTaunter and MahoganyPumpkin
Raven711's Definition -
The definition of FANDOM- a group of FANGIRLS (see FANGIRL, chapter 1) that obsess over a book series, movie, band, actor, or similar. FANDOM merchandise includes posters, jewelry, and clothes.
The extreme way to make a member of a FANDOM extremely anger is an making fun of their FANDOM. Never do that. Never.
FANDOM insults are often inside jokes, including Stiff, Pansycake, Nose, Muggle, Squib, mundane, and more. Although the person being insulted doesn't know that the meaning, they are extremely satisfying.
One way members of a FANDOM express themselves is through fanfiction. For example: alternate-timeline, 'ship' stories (Dramione, for one), continuations, different POV, next generation (Willow Mellark), or same-setting (my Faction-type stories).