The Collaborative International Dictionary of English v.0.48:

Sanitary \San"i*ta*ry\, a. [L. sanitas health: cf. F. sanitaire.
   See Sanity.]
   Of or pertaining to health; designed to secure or preserve
   health; relating to the preservation or restoration of
   health; hygienic; as, sanitary regulations. See the Note
   under Sanatory.
   [1913 Webster]

   Sanitary Commission. See under Commission.
      [1913 Webster]

WordNet (r) 3.0 (2006):

sanitary
    adj 1: free from filth and pathogens; "sanitary conditions for
           preparing food"; "a sanitary washroom" [syn: sanitary,
           healthful] [ant: insanitary, unhealthful,
           unsanitary]

Moby Thesaurus II by Grady Ward, 1.0:

30 Moby Thesaurus words for "sanitary":
   antiseptic, aseptic, beneficial, benign, boiled, bracing, clean,
   constitutional, decontaminated, disinfected, good, good for,
   health-enhancing, health-preserving, healthful, healthy, hygeian,
   hygienic, invigorating, pasteurized, prophylactic, refreshing,
   salubrious, salutary, sterile, sterilized, tonic, uninfected,
   unpolluted, wholesome