supereminent; surpassing others; as, transcendental being or qualities.-in the kantian system, of or pertaining to that which can be determined a priori in regard to the fundamental principles of all human knowledge. what is transcendental, therefore, transcends empiricism; but is does not transcend all human knowledge, or become transcendent. it simply signifies the a priori or necessary conditions of experience which, though affording the conditions of experience, transcend the sphere of that contingent knowledge which is acquired by experience.-vaguely and ambitiously extravagant in speculation, imagery, or diction.