n. 防腐剂

a. 无菌的

[医] 无菌的

[ adj ]
free of or using methods to keep free of pathological microorganisms
<adj.all>
a sterile operating areaaseptic surgical instruments
aseptic surgical techniques

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

2. free from pathogenic microorganisms; sterile; as, aseptic
operating conditions.
[PJC]

3. [metaphorical] lacking emotion, human warmth, or
excitement.
[PJC]


Aseptic \A*sep"tic\, n.
An aseptic substance.