Noun.
From concise.
Essentially, something that is concise could also be described as having concision.
From William Gibson’s introduction to a comicbook.
“I thoroughly enjoyed SVK, which either in spite or because of its concision is somehow Dickensian, and while quite thoroughly dark, is also quite touching. Memorable. And couldn’t be done as well, or even be born, in any other medium at all.”
-William Gibson @ SVK