Word or phrase that has no repeated letters (every answer in this puzzle is an example of one)

• A line drawn on a map connecting points having the same numerical value of some variable
• Contour line
• Word with no repeating letters
• Word or phrase with no repeated letters, such as every answer in this puzzle
• Map line between equal points
• Map line connecting points of equal value
• Line on a chart
• Word with no repeated letters

Wikipedia Word definitions in Wikipedia
An isogram (also known as a "nonpattern word") is a logological term for a word or phrase without a repeating letter. It is also used by some to mean a word or phrase in which each letter appears the same number of times, not necessarily just once. Conveniently, ...

Wiktionary Word definitions in Wiktionary
n. 1 A word or phrase in which each letter occurs the same number of times 2 A line on a chart, such as a contour line, joining points that have the same value for some quantity