In`va*lid"i*ty (?), n. [Cf. F. invalidit'e, LL. invaliditas want of health.]
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.
© Webster 1913.