The Collaborative International Dictionary of English v.0.48:

Proliferous \Pro*lif"er*ous\, a. [L. proles offspring +
   -ferous.]
   [1913 Webster]
   1. (Bot.) Bearing offspring; -- applied to a flower from
      within which another is produced, or to a branch or frond
      from which another rises, or to a plant which is
      reproduced by buds or gemm[ae].
      [1913 Webster]

   2. (Zool.)
      (a) Producing young by budding.
      (b) Producing sexual zooids by budding; -- said of the
          blastostyle of a hydroid.
      (c) Producing a cluster of branchlets from a larger
          branch; -- said of corals.
          [1913 Webster]

   Proliferous cyst (Med.), a cyst that produces
      highly-organized or even vascular structures. --Paget.
      [1913 Webster] -- Pro*lif"er*ous*ly, adv.
      [1913 Webster]