Source : Webster's Revised Unabridged Dictionary (1913)

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.

            Prayers are sometimes a presentation of mere
            desires.                              --Hooker.

   2. Hence, exhibition; representation; display; appearance;
      semblance; show.

            Under the presentation of the shoots his wit.
                                                  --Shak.

   3. That which is presented or given; a present; a gift, as,
      the picture was a presentation. [R.]

   4. (Eccl.) The act of offering a clergyman to the bishop or
      ordinary for institution in a benefice; the right of
      presenting a clergyman.

            If the bishop admits the patron's presentation, the
            clerk so admitted is next to be instituted by him.
                                                  --Blackstone.

   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.

   {Presentation copy}, a copy of a book, engraving, etc.,
      presented to some one by the author or artist, as a token
      of regard.

Source : WordNet®

presentation
     n 1: the activity of formally presenting something (as a prize or
          reward); "she gave the trophy but he made the
          presentation"
     2: the act of making something publicly available; presenting
        news or other information by broadcasting or printing it;
        "he prepared his presentation carefully in advance"
     3: 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: {presentment}, {demonstration}]
     4: the act of presenting a proposal
     5: a visual representation of something [syn: {display}]
     6: formally making a person known to another or to the public
        [syn: {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"