The ordinal number matching the number 60 in a series.(noun)
One of 60 equal parts.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "sixtieth" in a sentence
"In these oblations there is a progression as to the relation between the kind and the quantity: of the corn, the sixth of a tenth, that is, a sixtieth part of the quantity specified; of the oil, the tenth of a tenth, that is, an hundredth part; and of the flock, one from every two hundred."
"Even if we confine the discussion to the health care debate, where the four 'sixtieth' Senators 'appear at their most powerful, the question still remains: Does the failure to deliver a progressive bill lie in the institutional arrangements of government, or rather a failure of Democratic leadership?"
"Not to mention the vast array of carrots and sticks that Obama has at his disposal to coax and cajole the 'sixtieth' Senators he has failed to use, and even worse, his proactive stance in empowering the Finance committee's half-Republican 'Gang of Six' that ended in disaster."