D defs.my
Entry 1 sense Webster, 1913

Sanitation

/sănˌ-ət-āsh'-ən/ · San·i·ta·tion · IPA /ˌsænɪˈteɪʃən/
01 n. The act of rendering sanitary; the science of sanitary conditions; the preservation of health; the use of sanitary measures; hygiene.
  1. 1.
    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.