From the American science-fiction television series Star Trek: The Next Generation, in which it is a term of endearment used by the Betazoid race, said to mean "beloved."
1994 August 30, djsst22 [username], “GWF ISO SF”, in pgh.singles[1] (Usenet):
I have a 2 year old son, and my major interests include science fiction TV (Star Trek, X-Files), music, books and movies. […] I am looking for my imzadi, and hope to meet her someday.
1999 October 28, Lisa: DreaManiChicKuriousStarfire [username], “Re: Halloween: What are your plans?”, in alt.drugs.psychedelics[2] (Usenet):
So I'll probably run about the neighborhood with my imzadi (what I've decided to call my 'best-friend-person' now. It's a Star Trek term, Betazoid stuff.) […]
2001, Cari Lynn, “To Touch The Face of God”, in Journey Without a Map, Writers Club Press, →ISBN, page 20:
I push beyond my body I push beyond this world of mine Drunk without wine myself my imzadi