Source : Webster's Revised Unabridged Dictionary (1913)

Involvement \In*volve"ment\, n.
   The act of involving, or the state of being involved. --Lew
   Wallace.

Source : WordNet®

involvement
     n 1: the act of sharing in the activities of a group; "the
          teacher tried to increase his students' engagement in
          class activities" [syn: {engagement}, {participation}, {involution}]
          [ant: {non-engagement}, {non-engagement}, {non-engagement}]
     2: a connection of inclusion or containment; "he escaped
        involvement in the accident"; "there was additional
        involvement of the liver and spleen"
     3: a sense of concern with and curiosity about someone or
        something; "an interest in music" [syn: {interest}]
     4: a usually secretive or illicit sexual relationship [syn: {affair},
         {affaire}, {intimacy}, {liaison}, {amour}]
     5: the condition of sharing in common with others (as fellows
        or partners etc.) [syn: {participation}]