Using jargon in the name of the @derivative attribute

[Tino]

@wneumann

But it is such a generic term that simply searching for "with respect to" returns essentially useless results. A quick check I did requires me to go three pages deep into the google results before I get a result that is even related to math, the Wikipedia page for Matrix Calculus. And I had to go seven pages deep before I got a result with "derivative" in the title.

Did you perform a search for "for", "let", "contains" or "where" for comparison?
Those would most likely also have no relevant results in the top ranks — and I don't consider that important, because all those words are clear enough to be understood without help.
However, I don't want to conceal a precedent:

@Chris_Lattner

“associatedtype”: “googlable”. verbose, but specific. Reasonably advanced feature that occurs infrequently, so verbosity is a good thing.

I still think it's not a good idea to make decisions based on what a search engine might return, but of course my opinions are not nearly as relevant.