The Collaborative International Dictionary of English v.0.48:

Presentation \Pres`en*ta"tion\, n. [L. praesentatio a showing,
   representation: cf. F. pr['e]sentation.]
   1. The act of presenting, or the state of being presented; a
      setting forth; an offering; bestowal.
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            Prayers are sometimes a presentation of mere
            desires.                              --Hooker.
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   2. Hence, exhibition; representation; display; appearance;
      semblance; show.
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            Under the presentation of the shoots his wit.
                                                  --Shak.
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   3. That which is presented or given; a present; a gift, as,
      the picture was a presentation. [R.]
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   4. (Eccl.) The act of offering a clergyman to the bishop or
      ordinary for institution in a benefice; the right of
      presenting a clergyman.
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            If the bishop admits the patron's presentation, the
            clerk so admitted is next to be instituted by him.
                                                  --Blackstone.
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   5. (Med.) The particular position of the child during labor
      relatively to the passage though which it is to be brought
      forth; -- specifically designated by the part which first
      appears at the mouth of the uterus; as, a breech
      presentation.
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   Presentation copy, a copy of a book, engraving, etc.,
      presented to some one by the author or artist, as a token
      of regard.
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WordNet (r) 3.0 (2006):

presentation
    n 1: the activity of formally presenting something (as a prize
         or reward); "she gave the trophy but he made the
         presentation"
    2: a show or display; the act of presenting something to sight
       or view; "the presentation of new data"; "he gave the
       customer a demonstration" [syn: presentation,
       presentment, demonstration]
    3: the act of making something publicly available; presenting
       news or other information by broadcasting or printing it; "he
       prepared his presentation carefully in advance"
    4: the act of presenting a proposal
    5: a visual representation of something [syn: display,
       presentation]
    6: formally making a person known to another or to the public
       [syn: presentation, introduction, intro]
    7: (obstetrics) position of the fetus in the uterus relative to
       the birth canal; "Cesarean sections are sometimes the result
       of abnormal presentations"