The Collaborative International Dictionary of English v.0.48:

Transcendent \Tran*scend"ent\, a. [L. transcendens, -entis, p.
   pr. of transcendere to transcend: cf. F. transcendant, G.
   transcendent.]
   1. Very excellent; superior or supreme in excellence;
      surpassing others; as, transcendent worth; transcendent
      valor.
      [1913 Webster]

            Clothed with transcendent brightness. --Milton.
      [1913 Webster]

   2. (Kantian Philos.) Transcending, or reaching beyond, the
      limits of human knowledge; -- applied to affirmations and
      speculations concerning what lies beyond the reach of the
      human intellect.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Transcendent \Tran*scend"ent\, n.
   That which surpasses or is supereminent; that which is very
   excellent.
   [1913 Webster]

WordNet (r) 3.0 (2006):

transcendent
    adj 1: exceeding or surpassing usual limits especially in
           excellence [syn: transcendent, surpassing]
    2: beyond and outside the ordinary range of human experience or
       understanding; "the notion of any transcendent reality beyond
       thought"