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.
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            A tree may be maturated artificially. --Fuller.
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   2. To promote the perfect suppuration of (an abscess).
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