Dictionary
pace•set•ter
Pronunciation: (pās'set"ur), [key]—
n.
1. a person, group, or organization that is the most progressive or successful and serves as a model to be imitated.
2. a person or thing that sets the pace, as in racing. Also called
pacemaker. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.