FACTITIOUS a.
ial or conventional, in distinction from a natural, standard or rule; not natural; as, factitious cinnabar or jewels; a factitious taste. -- Fac-ti"tious*ly, adv. -- Fac*ti"tious-ness, n. He acquires a factitious propensity, he forms an incorrigible habit, of desultory reading. De Quincey.