The Collaborative International Dictionary of English v.0.48:

Discover \Dis*cov"er\, v. t. [imp. & p. p. Discovered; p. pr.
   & vb. n. Discovering.] [OE. discoveren, discuren, descuren,
   OF. descovrir, descouvrir, F. d['e]couvrir; des- (L. dis-) +
   couvrir to cover. See Cover.]
   1. To uncover. [Obs.]
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            Whether any man hath pulled down or discovered any
            church.                               --Abp.
                                                  Grindal.
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   2. To disclose; to lay open to view; to make visible; to
      reveal; to make known; to show (what has been secret,
      unseen, or unknown). [Archaic]
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            Go, draw aside the curtains, and discover
            The several caskets to this noble prince. --Shak.
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            Prosperity doth best discover vice; but adversity
            doth best discover virtue.            --Bacon.
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            We will discover ourselves unto them. --1 Sam. xiv.
                                                  8.
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            Discover not a secret to another.     --Prov. xxv.
                                                  9.
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   3. To obtain for the first time sight or knowledge of, as of
      a thing existing already, but not perceived or known; to
      find; to ascertain; to espy; to detect. [WordNet sense
      1,2,3,4,5,6,7,8]
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            Some to discover islands far away.    --Shak.
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   4. To manifest without design; to show.
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            The youth discovered a taste for sculpture. --C. J.
                                                  Smith.
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   5. To explore; to examine. [Obs.]

   Syn: To disclose; bring out; exhibit; show; manifest; reveal;
        communicate; impart; tell; espy; find; out; detect. --
        To Discover, Invent. We discover what existed
        before, but remained unknown; we invent by forming
        combinations which are either entirely new, or which
        attain their end by means unknown before. Columbus
        discovered America; Newton discovered the law of
        gravitation; Whitney invented the cotton gin; Galileo
        invented the telescope.
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WordNet (r) 3.0 (2006):

discovered
    adj 1: discovered or determined by scientific observation;
           "variation in the ascertained flux depends on a number of
           factors"; "the discovered behavior norms"; "discovered
           differences in achievement"; "no explanation for the
           observed phenomena" [syn: ascertained, discovered,
           observed]