Source : Webster's Revised Unabridged Dictionary (1913)

Stringency \Strin"gen*cy\ (str[i^]n"jen*s[y^]), n.
   The quality or state of being stringent.

Source : WordNet®

stringency
     n 1: a state occasioned by scarcity of money and a shortage of
          credit [syn: {tightness}]
     2: conscientious attention to rules and details [syn: {strictness}]