Trekdom

Etymology
From.

Noun

 * 1)  The fandom of the  science-fiction franchise.
 * 2) * 1983, Theodore Sturgeon, "Introduction", in Sonni Cooper, Black Fire, unnumbered page:
 * She is so involved in Trekdom that she can pick up the phone just once and contact I don't how many meticulously organized Star Trek fandoms.