Source : Webster's Revised Unabridged Dictionary (1913)

Abstemiousness \Ab*ste"mi*ous*ness\, n.
   The quality of being abstemious, temperate, or sparing in the
   use of food and strong drinks. It expresses a greater degree
   of abstinence than temperance.

Source : WordNet®

abstemiousness
     n 1: restricted to bare necessities
     2: moderation in eating and drinking