I. adjective
Date: 1884
1. : of or relating to telephone communication with a distant point especially outside a specified area
2.
a. : situated a long distance away
b. : going or covering a long distance
long-distance roads
a long-distance runner
c. : conducted or effective over long distance
a long-distance relationship
long-distance listening devices
II. adverb
Date: circa 1961
1. : by long-distance telephone
called her long-distance
2. : over or from a long distance