Magnification

[,mægnɪfɪ'keɪʃ(ə)n] or [,mæɡnɪfɪ'keʃən]

(noun.) the act of expanding something in apparent size.

(noun.) the ratio of the size of an image to the size of the object.

Checked by Balder--From WordNet

(n.) The act of magnifying; enlargement; exaggeration.

Typed by Levi