Magnifying p. pr. & vb. n. : of Magnify

Example:


Taxonomy
lens, magnifying glass, magnifying power, the eye, magnification, optical power, free encyclopedia, hand lens, convex lens, magnifying glasses, Magnifiers, History, Fresnel lens, 13th-century, eye, MP0, Kriss, focal length.

Defination from the web:
magnifying glass is an icon of detective fiction, particularly that of Sherlock Holmes. ... The magnification of a magnifying glass depends on where it is placed between the user's eye and the object being viewed, and the total distance ...