Source : Webster's Revised Unabridged Dictionary (1913)

Luxuriant \Lux*u"ri*ant\, a. [L. luxurians, p. pr. of luxuriare:
   cf. F. luxuriant. See {Luxuriate}.]
   Exuberant in growth; rank; excessive; very abundant; as, a
   luxuriant growth of grass; luxuriant foliage.

         Prune the luxuriant, the uncouth refine. --Pope.

   {Luxuriant flower} (Bot.), one in which the floral envelopes
      are overdeveloped at the expense of the essential organs.

Source : WordNet®

luxuriant
     adj 1: marked by complexity and richness of detail; "an elaborate
            lace pattern" [syn: {elaborate}]
     2: produced or growing in extreme abundance; "their riotous
        blooming" [syn: {exuberant}, {lush}, {profuse}, {riotous}]