The Collaborative International Dictionary of English v.0.48:

Incomprehensible \In*com`pre*hen"si*ble\, a. [L.
   incomprehensibilis: cf. F. incompr['e]hensible. See In-
   not, and Comprehensible.]
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   1. Not capable of being contained within limits.
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            An infinite and incomprehensible substance.
                                                  --Hooker.
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   2. Not capable of being comprehended or understood; beyond
      the reach of the human intellect; inconceivable.
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            And all her numbered stars that seem to roll
            Spaces incomprehensible.              --Milton.
      -- In*com`pre*hen"si*ble*ness, n. --
      In*com`pre*hen"si*bly, adv.
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