1
- of a more advanced age较年长的, 年龄大些的：
he is 20 years senior to Leonard.
他比伦纳德大20岁。
1.1
- Brit. of, for, or denoting schoolchildren above a certain age, typically eleven〈英〉大于一定年龄（通常为11岁）的学童的。
1.2
- US of the final year at a university or high school〈美〉大学（或中学）最后一年的。
1.3
- relating to or denoting competitors of above a certain age or of the highest status in a particular sport（参赛选手）大于一定年龄的; 最高级别的。
1.4
- （常作Senior）[postpositive](in names) denoting the elder of two who have the same name in a family, especially a father as distinct from his son用于姓名中以区别一家中的同名者, 尤用于区别同名的父亲与儿子大, 老：
Henry James senior.
大亨利·詹姆斯。
2
- holding a high and authoritative position高级的; 高职的：
he is a senior Finance Ministry official.
他是财政部高级官员。
2.1
- predic.
senior to
holding a higher position than职位高于： the people senior to me in my department.
我的部门中职位高于我的人。
1
- a person who is a specified number of years older than someone else较年长的人：
she was only two years his senior.
她只比他大两岁。
1.1
- an elderly person, especially an old-age pensioner（尤指领养老金的）老年人。
1.2
- a student in one of the higher forms of a senior school（高级中学的）高年级学生。
1.3
- a competitor of above a certain age or of the highest status in a particular sport超过一定年龄的运动员; 资深运动员：
at fourteen you move up to the seniors.
14岁你就晋升到资深运动员行列。
派生词
seniority
noun词源
late Middle English: from Latin, literally 'older, older man', comparative of senex, sen- 'old man, old'.