forkorte

Verb

 * 1) to shorten
 * 2) to abbreviate
 * 3)  to reduce a fraction by dividing its denominator and its numerator by the same number

Etymology
From.

Verb

 * 1) to abridge
 * 2) to shorten, to abbreviate
 * 3)  to reduce a fraction by dividing its denominator and its numerator by the same number