Source : Webster's Revised Unabridged Dictionary (1913)

Caducity \Ca*du"ci*ty\, n. [LL. caducitas: cf. F. caducit['e].
   See {Caducous}.]
   Tendency to fall; the feebleness of old age; senility. [R.]

         [A] jumble of youth and caducity.        --Chesterfield.