Ditto for "phaser" or "Prime Directive" or "cloaking device."
Well, as I mentioned, "Prime Directive" predates
Star Trek. Its first notable use was by Jack Williamson to refer to the Humanoids' Prime Directive to protect organic beings, basically the First Law of Robotics run amok. Poul Anderson used it in the '50s to refer to a noninterference policy, which may have been an influence on ST. (Lloyd Biggle's fiction also featured a noninterference policy, but he didn't use that term for it, I think. And it was more of an "interfere without letting them know you're interfering" policy.)
Still, granted, by now the term has become indelibly associated with Trek, so it would be hard to divorce it.
"Cloaking device," on the other hand, has become a very generic term.
Star Wars used it in
The Empire Strikes Back, when the Imperials were puzzled by the
Millennium Falcon's "disappearance," and it's been used
in plenty of Star Wars tie-ins since. The
Stargate franchise
used the term "cloak" or "cloaking device" routinely. The Paul McGann
Doctor Who movie in 1996 used it as a term for the TARDIS's shapechanging chameleon circuit, and the modern DW series has made numerous references to "cloaking fields." So we're decades past the point when that term was exclusive to Trek.
All Star Trek is science fiction, but not all science fiction is Star Trek.
Then again, plenty of science fiction is set in universes where
Star Trek existed as a work of fiction and features characters who are fans of it, and who would therefore be influenced to use its terminology. That's implicitly the reason so much Trek terminology shows up in
Stargate TV.
After all, a lot of the real-world terminology we use today was coined in works of science fiction. James Blish coined "gas giant." Jack Williamson coined "genetic engineer" and "terraform." So it stands to reason that a conjectural future universe might get its technical terminology from popular science fiction such as
Star Trek.
Until now, we've not really needed a planet classification system, but I Imagine that we will likely need such when we have the ability to travel at multiples of the speed of light as they do in Trek.
Except we don't have to travel to planets to have a need to classify them; we just need to be able to study them. We can study a fair number of planets right here in our own system, and we've already discovered hundreds of exoplanets in other systems. As we learn more about them, we'll certainly need ways of classifying them.
After all, we already have a letter classification scheme for stars, and we haven't visited any of them. (Not even at night!)