Source : Webster's Revised Unabridged Dictionary (1913)

Magnification \Mag`ni*fi*ca"tion\, n.
   The act of magnifying; enlargement; exaggeration. [R.]

Source : WordNet®

magnification
     n 1: the act of expanding something in apparent size
     2: the ratio of the size of an image to the size of the object
     3: making to seem more important than it really is [syn: {exaggeration},
         {overstatement}] [ant: {understatement}]
     4: a photographic print that has been enlarged [syn: {enlargement},
         {blowup}]