Top definition
A person who is more interested in Star Trek than in girls/guys.
A Person obsessed with Star Trek and all things having to do with Star Trek
Someone who's sexual orientation is towards Star Trek, or characters of the series
Lucas is a TrekkieSexual, he prefers Star Trak to women or guys.

Mary thinks William Shatner is hot, she won't shut up about it, she must be a bit of a TrekkieSexual.

Man that kids a TrekkieSexual he might as well fucking marry the TV.
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