名詞 index:

1. a numerical scale used to compare variables with one another or with some reference number
2. a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time
   同義詞：index number, indicant, indicator
3. a mathematical notation indicating the number of times a quantity is multiplied by itself
   同義詞：exponent, power
4. an alphabetical listing of names and topics along with page numbers where they are discussed
5. the finger next to the thumb
   同義詞：index finger, forefinger

動詞 index:

1. list in an index
2. provide with an index
3. adjust through indexation

1. The book is not well indexed.
   這部書索引做得不好。
2. The index is arranged in alphabetical order.
   這索引是按字母順序排列的。
3. Do you know the price index in the city?
   你知道這個城市的物價指數(shù)嗎？
4. The book will be indexed in the next edition so as to make it more useful.
   為了使它更實用，這本書在下一版本中將編有索引。

in.dex

n.（名詞）
【復數(shù)】 in.dex.es 或 in.di.ces [-d-sôz.]
Abbr. ind.Something that serves to guide, point out, or otherwise facilitate reference, especially:
縮寫 ind.索引：一種用以指引、指示或方便尋找資料的東西
An alphabetized list of names, places, and subjects treated in a printed work, giving the page or pages on which each item is mentioned.
索引：按字母順序排列的人名、地名和印刷品內容名稱，并在每個后面注上頁碼
A thumb index.
拇指索引
A table, file, or catalog.
目錄：表格目錄，文件目錄或內容目錄
Something that reveals or indicates; a sign:
表示：具有暗示或揭示作用的東西；信號：
例句：
.Her face . . . was a fair index to her disposition.(Samuel Butler)
.她的臉是顯示她氣質的一個很好的指標.(塞繆爾·巴特勒)

Printing A character (F) used in printing to call attention to a particular paragraph or section.Also called fist ,hand
【印刷術】 指示格：印刷中使用的一個空格(F)以引起人們對某一特定段落或部分的重視也作 fist,hand
An indicator or a pointer, as on a scientific instrument.
標記，指標：標記或指標符號，如在科學儀器上的

Mathematics A number or symbol, often written as a subscript or superscript to a mathematical expression, that indicates an operation to be performed on, an ordering relation involving, or a use of the associated expression.
【數(shù)學】 指數(shù)，根指數(shù)：一個數(shù)或符號，多寫于數(shù)學表達式的下部或上部，表示一個有待完成的計算，或相應的次序關系，或一個相關表達的運用
A number derived from a formula, used to characterize a set of data.
指數(shù)：程式中的一個數(shù)字，用以表示一系列數(shù)據(jù)的性質
Index Roman Catholic Church A list formerly published by Church authority, restricting or forbidding the reading of certain books.
Index 【羅馬天主教】 禁書錄：以前由教會權威公布的清單，規(guī)定限制或禁止閱讀的某些書籍
v.tr.（及物動詞）
in.dexed,in.dex.ing,in.dex.es
To furnish with an index:
為…編索引：編纂一個目錄、索引：
例句：
index a book.
將書編索引

To enter in an index.
入索引：把…編入索引
To indicate or signal.
指示：表明或指示
To adjust through indexation.
修改，調整：運用指數(shù)的編程程序來修訂

來源：
Middle English [forefinger]
中古英語 [食指]
from Latin * see deik-
源自 拉丁語 *參見 deik-

【引伸】
in.dex.er
n.（名詞）