1980, The Best of Trek 2: From The Magazine For Star Trek Fans (eds. Walter Irwin & G. B. Love), page 115:
If the writer wants to share her Mary Sue or other fiction work with the readers (there are thousands of eager readers in the realms of Trekdom), then she should endeavor to make that fiction as plausible as possible.
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.
1992, The Best of the Best of Trek II (eds. Walter Irwin & G. B. Love), page 111:
A lot has been written in the annals of Trekdom concerning friendships and relationships.
1993, Phil Farrand, The Nitpicker's Guide for Next Generation Trekkers, Volume 2, page 179:
There's a little story going around Trekdom that Picard A (the one in our timeline) didn't kill Picard B (the one from six hours in the future) at the conclusion of this episode—that he merely stunned his counterpart.
1993, James Van Hise & Scott Nance, Trek: The Printed Adventures, page 114:
Since Paula [Smith] is one of the best writers in Trekdom[…] and has written a couple of K/S stories herself, I'd say she has every right to insist on such high literary standards.
1997, Constance Penley, NASA/Trek: Popular Science and Sex in America, page 140:
The Trekkers have had to struggle mightily, however, to find the right language to deride and dismiss the slashers. After all, Trekdom is a culture that believes itself superior to the rest of U.S. society in the strength of its allegiance to the values of democratic equality and tolerance for differences.
2002, John Motavalli, Bamboozled at the Revolution: How Big Media Lost Billions in the Battle for the Internet, page 186:
The site, reproduced in Italian, French, German, and Spanish, revealed how international a phenomenon Trekdom had become by the late '90s.
2003, Larry Nemecek, "Introduction to the Second Revised Edition", The Star Trek: The Next Generation Companion: Revised Edition, unnumbered page:
The world is certainly a different place, both in and out of Trekdom.
2009, Yonassan Gershom, Jewish Themes in Star Trek, page 100:
As is well known in Trekdom, the early Klingons were a thinly veiled metaphor for the Soviet Union.
2013, Frank Garcia & Mark Phillips, Science Fiction Television Series, 1990-2004: Histories, Casts and Credits for 58 Shows, page 165:
A Star Trek fan will recognize that the Sentient has taken on the name of one of Trekdom's favorite characters, Harry Mudd, as played by Roger C. Carmel in two of the original series' episodes.
2013, Jacqueline Lichtenberg, "Recollections of a Collating Party", in Fic: Why Fanfiction Is Taking Over the World (ed. Anne Jamison), page 92:
She was cataloguing my collection of Trek zines because it contained items she hadn't heard of elsewhere, a real treasure trove of Trekdom.
Noun: "(fandom slang) the fictional universe which serves as the setting for the Star Trek television series and films, as well as related novels, comics, etc"
1982, Trudy S. Moore, "Blacks In Space: Nichols, Winfield Hits In 'Star Trek II'", Jet, 12 July 1982, page 56:
After a three-year run on television and the first film, Star Trek: The Movie, Nichols has become as much a part of "trekdom" as the good-natured Admiral James Kirk and the stoic Mr. Spock, starring William Shatner and Leonard Nimoy respectively.
And here, together at last, are Captain Kirk and Captain Picard— the Washington and Lincoln of Trekdom— in the seventh "Star Trek" film since 1979, taking on your standard mad scientist who won't let a couple of hundred million lives stand in the way of his scheme to achieve immortality.