noun, plural in·dex·es, in·di·ces [in-duh-seez] /ˈɪn dəˌsiz/.
- a value that identifies and is used to locate a particular element within a data array or table.
- a reference table that contains the keys or references needed to address data items.
- an exponent.
- the integer n in a radical defining the n-th root: ∛ is a radical having index three.
- a subscript or superscript indicating the position of an object in a series of similar objects, as the subscripts 1, 2, and 3 in the series x1, x2, x3.
- winding number.
- a table of contents.
- a preface or prologue.
verb (used with object)
- indeterminate equation,
- indeterminate sentence,
- indeterminate vowel,
- index card,
- index case,
- index crime,
- index expurgatorius,
- index extensor muscle
Origin of index
Examples from the Web for index
He stuck his index finger in the red welt around the spot where bin Laden shot me.
Abu Hassar began to twirl it between his index finger and thumb.
When the advocacy group launched this Index in 2002, only 13 companies did.
That one line merits a single page reference for Tolstoy in the index.John Sutherland‘s Enjoyable Little History of Literature|Malcolm Forbes|November 29, 2013|DAILY BEAST
Pundit Niall Ferguson constructed a Twitter-based index that calculates relative prestige as the ratio of tweets to followers.
Slowly her right hand rose above her head with its index finger extended and slowly came down to her side.The Light in the Clearing|Irving Bacheller
These facts are related, says the Commentator, as an index to or test of the honesty of metal-workers.Hindu Law and Judicature|Yjnavalkya
His blue eyes sparkled and flashed, his clean-cut mobile features were an index to his slightest shades of feeling and expression.Adventure|Jack London
The ball had pierced my hand by the metacarpus under the index finger, and had broken the first phalanges.The Memoires of Casanova, Complete|Jacques Casanova de Seingalt
First page of index : 'ullimentary' changed to 'Allimentary'; also 'ilstrating' channged to 'illustrating'.The Nervous Child|Hector Charles Cameron
noun plural -dexes or -dices (-dɪˌsiːz)
- another name for exponent (def. 4)
- a number or variable placed as a superscript to the left of a radical sign indicating by its value the root to be extracted, as in ³√8 = 2
- a subscript or superscript to the right of a variable to express a set of variables, as in using x i for x 1, x 2, x 3, etc
Word Origin for index
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.
"compile an index," 1720, from index (n.). Related: Indexed; indexing.
n. pl. in•dex•es
An alphabetical list of subjects treated in a book. It usually appears at the end of the book and identifies page numbers on which information about each subject appears.