I actually think the use of the word in "Vortex" isn't entirely inapt; indeed, it seems like it's a nice pun. They both change their form-- but surely one of the reasons people are fearful of Changelings is because they can replace those you love. Julian Bashir, for example, was totally a Changeling!Okay, granted, that's something you can cite evidence for. And it does suggest a change in usage as a result of DS9's use. But that doesn't refute my statement that it was an aberrant use of the word when DS9: "Vortex" first applied it 23 years ago. That just wasn't what anyone used the word to mean at the time, or earlier. That's what the dictionary shows -- that there was no documented history of the word being used in that way prior to 1993. And that it still isn't standard enough to have made it into current dictionaries. Two media franchises don't really add up to general use.