I noticed ephemeral in a book I read last year, funny you should choose that word... because I do feel I see it around more, but it must be purely the way I'm reacting to it, because in the book it's used to refer to non immortal, non digitized humans (the book is we are legion we are bob.) and it's sort of elevated the word to a new status... but I've been using google Vm's for years prior... and when you dont have a static IP its "ephemeral". Its odd how it's been this background thing and I literally never paid it any mind

Also, I think I did look up the definition... or the definition was explained in the book.