Pronunciation : In`va*lid"i*ty Part of Speech : n. Etymology : [Cf. F. invalidité, LL. invaliditas want of health.] Definition : 1. Want of validity or cogency; want of legal force or efficacy; invalidness; as, the invalidity of an agreement or of a will.
2. Want of health; infirmity. [Obs.] Sir W. Temple. Source : Webster's Unabridged Dictionary, 1913