Source : Webster's Revised Unabridged Dictionary (1913)

Aseptic \A*sep"tic\, a. [Pref. a- not + septic.]
   Not liable to putrefaction; nonputrescent. -- n. An aseptic
   substance.

Source : WordNet®

aseptic
     adj : free of or using methods to keep free of pathological
           microorganisms; "a sterile operating area"; "aseptic
           surgical instruments"; "aseptic surgical techniques"
           [syn: {sterile}]