The Collaborative International Dictionary of English v.0.48:

Maturate \Mat"u*rate\, v. t. [imp. & p. p. Maturated; p. pr. &
   vb. n. Maturating.] [L. maturatus, p. p. of maturare to
   make ripe, fr. maturus ripe, mature. See Mature, v. & a.]
   1. To bring to ripeness or maturity; to ripen.
      [1913 Webster]

            A tree may be maturated artificially. --Fuller.
      [1913 Webster]

   2. To promote the perfect suppuration of (an abscess).
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Maturate \Mat"u*rate\, v. i.
   To ripen; to become mature; specifically, to suppurate.
   [1913 Webster]

WordNet (r) 3.0 (2006):

maturate
    v 1: develop and reach maturity; undergo maturation; "He matured
         fast"; "The child grew fast" [syn: mature, maturate,
         grow]
    2: grow old or older; "She aged gracefully"; "we age every day--
       what a depressing thought!"; "Young men senesce" [syn:
       senesce, age, get on, mature, maturate]
    3: ripen and generate pus; "her wounds are festering" [syn:
       fester, maturate, suppurate]