concinnity \kuhn-SIN-uh-tee\ (noun) - 1 : Internal harmony or fitness in the adaptation of parts to a whole or to each other. 2 : Studied elegance of design or arrangement -- used chiefly of literary style. 3 : An instance of concinnity.
"To the exact extent that she imposes on language the phantasms of her mind, she dismisses the presence of the world and its concinnity in the natural order..." -- William Benton , 'Madly'
Concinnity comes from Latin concinnitas, "elegance; harmony of style," from concinnus, "well put together; pleasing, on account of harmony and proportion."