Hypertext Webster Gateway: "Superannuate"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Superannuate \Su`per*an"nu*ate\, v. t. [imp. & p. p.
{Superannuated}; p. pr. & vb. n. {Superannuating}.] [Pref.
super- + L. annus a year.]
1. To impair or disquality on account of age or infirmity.
--Sir T. Browne.
2. To give a pension to, on account of old age or other
infirmity; to cause to retire from service on a pension.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Superannuate \Su`per*an"nu*ate\, v. i.
To last beyond the year; -- said of annual plants. [Obs.]
--Bacon.
From WordNet (r) 1.7 (wn)
superannuate
v 1: retire and pension (someone) because of age or physical
inability
2: declare to be obsolete
3: become obsolete
4: retire or become ineligible because of old age or infirmity
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