• n. 指標；指數；索引；指針
• vi. 做索引
• vt. 指出；編入索引中

來自拉丁語indicare,指出，說明，來自in-,進入，使，-dic,指出，說，詞源同digit,indication.引申詞義指數，標志，特征等。其復數形式為indices.

index

index: [16] Latin index originally meant ‘indicator’, and hence more specifically ‘forefinger’ – the finger used for pointing things out. It was based on the same stem, *dik- ‘point out’, as produced Latin dīcere ‘say’ (source of English diction, dictionary, etc). The metaphorically extended sense ‘list of contents’ had already developed in Latin before English took it over. Indicate is a parallel but apparently independent formation.
=> diction, dictionary, indicate

index (n.)

late 14c., "the forefinger," from Latin index (genitive indicis) "forefinger, pointer, sign, list," literally "anything which points out," from indicare "point out" (see indication). Meaning "list of a book's contents" is first attested 1570s, from Latin phrases such as Index Nominum "Index of Names," index expurgatorius "specification of passages to be deleted from works otherwise permitted." Scientific sense (refractive index, etc.) is from 1829; economic sense (cost-of-living index, etc.) is from 1870, from the scientific usage, from sense "an indicator." The Church sense of "forbidden books" is from index librorum prohibitorum, first published 1564 by authority of Pius IV.

index (v.)

"compile an index," 1720, from index (n.). Related: Indexed; indexing.

1. The FT 30 share index was up 16.4 points to 1,599.6.

《金融時報》30股指上漲16.4點，收于1,559.6點。

來自柯林斯例句

2. The index is the government's chief gauge of future economic activity.

這一指數是政府判斷未來經濟活動的主要依據。

來自柯林斯例句

3. He suffered a hairline fracture of the right index finger.

他右手食指骨裂。

來自柯林斯例句

4. Weeds are an index to the character of the soil.

雜草是反映土壤特征的一個指標。

來自柯林斯例句

5. The stock-market index fell by 80% before it began to recover.

股市指數下跌了80%后才開始反彈。

來自柯林斯例句