Source : Webster's Revised Unabridged Dictionary (1913)

Sanitation \San`i*ta"tion\, n.
   The act of rendering sanitary; the science of sanitary
   conditions; the preservation of health; the use of sanitary
   measures; hygiene.

         How much sanitation has advanced during the last half
         century.                                 --H.
                                                  Hartshorne.

Source : WordNet®

sanitation
     n 1: the state of being clean and conducive to health
     2: making something sanitary (free of germs) as by sterilizing
        [syn: {sanitization}, {sanitisation}]