Definition of "superannuate" [su•per•an•nu•ate]

• To allow to retire on a pension because of age or infirmity. (verb-transitive)
• To set aside or discard as old-fashioned or obsolete. (verb-transitive)

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.

• "These crumbling relicks and long fired particles superannuate such expectations; bones, hairs, nails, and teeth of the dead, were the treasures of old sorcerers."
• "Eternally the ridiculous pretence of being "noble" by family, seems to claim for obscure foreigners some sort of advantage over the plain untitled Englishman; but eternally the travelled Englishman recollects, that, so far as this equivocal "nobility" had been really fenced with privileges, those have been long in a course of superannuation; whilst the counter-vailing advantages for his own native aristocracy are precisely those which time or political revolutions never _can_ superannuate."
• "A _superannuate_ is one who has become impaired or disabled by length of years."