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.
Use "superannuate" in a sentence
"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."