The Collaborative International Dictionary of English v.0.48:

Presume \Pre*sume"\, v. t. [imp. & p. p. Presumed; p. pr. &
   vb. n. Presuming.] [F. pr['e]sumer, L. praesumere,
   praesumptum; prae before + sumere to take. See Assume,
   Redeem.]
   1. To assume or take beforehand; esp., to do or undertake
      without leave or authority previously obtained.
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            Dare he presume to scorn us in this manner? --Shak.
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            Bold deed thou hast presumed, adventurous Eve.
                                                  --Milton.
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   2. To take or suppose to be true, or entitled to belief,
      without examination or proof, or on the strength of
      probability; to take for granted; to infer; to suppose.
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            Every man is to be presumed innocent till he is
            proved to be guilty.                  --Blackstone.
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            What rests but that the mortal sentence pass, . . .
            Which he presumes already vain and void,
            Because not yet inflicted?            --Milton.
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