Pronunciation: (sOO'pur-mu-jôr"i-tē, -jor"-), [key]
—n., pl., -ties.
1. a majority that must represent some percentage more than a simple majority.
2. a majority greater than a specified number, as 60%, of the total: required to pass certain types of legislation, override vetos, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.