Webster's English Dictionary

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application

ap.pli.ca.tion \.ap-l*-'ka--sh*n\ n [ME applicacioun, fr. L application-, 
   applicatio inclination,] fr. applicatus, pp. of applicare 1: an act of 
   applying :  1a: an act of putting to use  1b: an act of administering or 
   superposing  1c: assiduous attention  2: REQUEST, PETITION  3: something 
   applied or used in applying : as  3a: the practical inference to be derived 
   from a principle or moral tale  3b: a medicated or protective layer or 
   material {an oily ~ for dry  skin} 3c: a form used in making a request  4: 
   capacity for practical use