Source : Webster's Revised Unabridged Dictionary (1913)

   {Natural person} (Law), a man, woman, or child, in
      distinction from a corporation.

   {In person}, by one's self; with bodily presence; not by
      representative. ``The king himself in person is set
      forth.'' --Shak.

   {In the person of}, in the place of; acting for. --Shak.

Source : WordNet®

in person
     adv : in the flesh; without involving anyone else; "I went there
           personally"; "he appeared in person" [syn: {personally}]

in person
     adj : an appearance carried out personally in someone else's
           physical presence; "he carried out the negotiations in
           person"; "a personal appearance is an appearance by a
           person in the flesh" [syn: {in-person(a)}, {in
           person(p)}, {in the flesh(p)}]