- a substance used to preserve foodstuffs, wood, or other materials against decay防腐剂; 保护剂。
- acting to preserve something保护的, 保存的：
the preservative effects of freezing.
冷冻的防腐保护作用。
词源
late Middle English: via Old French from medieval Latin praeservativus, from late Latin praeservat- 'kept'， from the verb praeservare （see PRESERVE）.