marathoner Definition
mara·thoner (-ər)
noun
one who competes in a marathon
marathoner Related Forms
mar′a·thon′·ing noun
marathoner Usage Examples
Converse of object
become: As a consequence you will become a faster marathoner.
Adjective modifier
world-class: If a person has a preponderance of fast-twitch muscles there is no chance of him or her becoming a world-class marathoner.

