(pl. indexes 或［尤见于技术用语］ indices /-dɪsiːz/)
1
- an alphabetical list of names, subjects, etc., with references to the places where they occur, typically found at the end of a book（尤指书末的）索引。
1.1
- an alphabetical list by title, subject, author, or other category of a collection of books or documents, for example in a library（书籍、文件等, 按标题、题材、作者等依字母顺序排列的, 如图书馆中的）索引。
1.2
- Computing a set of items each of which specifies one of the records of a file and contains information about its address【计算机】索引; 变址。
2
- an indicator, sign, or measure of something指示; 标志; 测量：
exam results may serve as an index of the teacher's effectiveness.
考试成绩可作为对教师绩效的衡量。
2.1
- a figure in a system or scale representing the average value of specified prices, shares, or other items as compared with some reference figure指数：
the hundred-shares index closed down 9.3.
一百指数收市时跌去9.3点。
2.2
- a pointer on an instrument, showing a quantity, a position on a scale, etc.（刻度盘等的）指针。
2.3
- with modifier a number giving the magnitude of a physical property or other measured phenomenon in terms of a standard（物理属性等的）指标：
the oral hygiene index was calculated as the sum of the debris and calculus indices.
口腔卫生指标曾以残屑以及牙垢指数之和计算。
3
- Mathematics an exponent or other superscript or subscript number appended to a quantity【数】指数; 根指数。
4
- Printing a symbol shaped like a pointing hand, typically used to draw attention to a note【印刷】指示符号, 参见符。
5
with obj.
1
- record (names, subjects, etc.) in an index把（姓名、主题等）编入索引：
the list indexes theses under regional headings.
目录把论文按区域标题制成索引。
1.1
- provide an index to为…编索引。
2
- link the value of (prices, wages, or other payments) automatically to the value of a price index使（价格、工资或其他支付款项）自动与价格指数挂钩。
3
- no obj. [often as noun indexing](of a machine or part of one) rotate or otherwise move from one predetermined position to another in order to carry out a sequence of operations（机器, 部件）转位。
派生词
indexable
adjectiveindexation
nounindexer
nounindexible
adjective词源
late Middle English: from Latin index, indic- 'forefinger, informer, sign', from in- 'towards' + a second element related to dicere 'say' or dicare 'make known'; compare with INDICATE. The original sense 'index finger' (with which one points), came to mean 'pointer' （late 16th cent.）, and figuratively something that serves to point to a fact or conclusion; hence a list of topics in a book （'pointing' to their location）.