- intended to prevent disease预防性的, 预防疾病的：
prophylactic measures.
预防措施。
1
- a medicine or course of action used to prevent disease预防药; 预防剂; 预防法：
I took malaria prophylactics.
我服用了预防疟疾的药。
1.1
- chiefly N. Amer. a condom〈主北美〉避孕套。
派生词
prophylactically
adverb词源
late 16th cent.: from French prophylactique,from Greek prophulaktikos,from pro 'before'+phulassein 'to guard'.