security
/sɪˈkjʊərətɪ/noun
(pl. -ies)
1
- mass noun the state of being free from danger or threat安全; 无威胁状态：
the system is designed to provide maximum security against toxic spills
该系统的设计就是为了最大限度地减少溢出的有毒物质的危害性
job security.
就业安全。
1.1
- the safety of a state or organization against criminal activity such as terrorism, theft, or espionage（国家或组织的）安全：
a matter of national security.
国家安全问题。
1.2
- procedures followed or measures taken to ensure such safety防护程序; 安全措施：
amid tight security the presidents met in the Colombian resort.
在严密的安全措施下总统们聚集到了这个哥伦比亚胜地。
1.3
- the state of feeling safe, stable, and free from fear or anxiety安全感：
this man could give the emotional security she needed.
这个男人能够给予她所需要的情感安全。
2
- a thing deposited or pledged as a guarantee of the fulfilment of an undertaking or the repayment of a loan, to be forfeited in case of default抵押品。
3
- （常作securities）a certificate attesting credit, the ownership of stocks or bonds, or the right to ownership connected with tradable derivatives有价证券。
短语
on security of something
- using something as a guarantee用某物作抵押。
词源
late Middle English: from Old French securite or Latin securitas, from securus 'free from care' （see SECURE）.