a. [ L. luxurians, p. pr. of luxuriare: cf. F. luxuriant. See Luxuriate. ] 1. Exuberant in growth; rank; excessive; profuse; very abundant; as, a luxuriant growth of grass; luxuriant foliage. [ 1913 Webster ]
Prune the luxuriant, the uncouth refine. Pope. [ 1913 Webster ]
2. Producing luxuriant growth; very fertile; -- of soil. [ PJC ]
3. Having or producing an abundance of elaborate details; unrestrained; -- of imagery or ornamentation. [ PJC ]
Luxuriant flower (Bot.), one in which the floral envelopes are overdeveloped at the expense of the essential organs. [ 1913 Webster ]