[TZubiri]

I noticed this when adding citations to wikipedia.

You are may find a definition of what a "skyscraper" is, by some hyperfocused association, but you'll get a bias towards a definite measurement like "skyscrapers are buildings between 700m to 3500m tall", which might be useful for some data mining project, but not at all what people mean by it.

The actual definition is not in a specific source but in the way it is used in other sources like "the Manhattan skyscraper is one of the most iconic skyscrapers", on the aggregate you learn what it is, but it isn't very citable on its own, which gives WP that pedantic bias.