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16 dictionary results for: Index
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
in·dex       [in-deks] Pronunciation Key noun, plural -dex·es, -di·ces       [-duh-seez] Pronunciation Key, verb
–noun
1.(in a nonfiction book, monograph, etc.) a more or less detailed alphabetical listing of names, places, and topics along with the numbers of the pages on which they are mentioned or discussed, usually included in or constituting the back matter.
2.a sequential arrangement of material, esp. in alphabetical or numerical order.
3.something used or serving to point out; a sign, token, or indication: a true index of his character.
4.something that directs attention to some fact, condition, etc.; a guiding principle.
5.a pointer or indicator in a scientific instrument.
6.a piece of wood, metal, or the like, serving as a pointer or indicator.
7.Computers.
a.a value that identifies and is used to locate a particular element within a data array or table.
b.a reference table that contains the keys or references needed to address data items.
8.Also called fist, hand. Printing. a sign in the shape of a hand with extended index finger, used to point out a particular note, paragraph, etc.
9.a light, smooth cardboard stock.
10.the forefinger.
11.a number or formula expressing some property, ratio, etc., of something indicated: index of growth; index of intelligence.
12.Statistics. index number.
13.Economics. price index.
14.Algebra.
a.an exponent.
b.the integer n in a radical defining the n-th root: ∛ is a radical having index three.
c.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.
d.winding number.
15.Horology. a leverlike regulator for a hairspring.
16.(initial capital letter) Roman Catholic Church.
a.Index Librorum Prohibitorum.
b.Index Expurgatorius.
17.(usually initial capital letter) any list of forbidden or otherwise restricted material deemed morally or politically harmful by authorities: an Index of disapproved books relating to Communism.
18.Optics. index of refraction.
19.Obsolete.
a.a table of contents.
b.a preface or prologue.
–verb (used with object)
20.to provide with an index, as a book.
21.to enter in an index, as a name or topic.
22.to serve to indicate: warm breezes indexing the approach of spring.
23.to place (a book) on an official list as politically or morally harmful: The commissar insisted on indexing the book.
24.to rotate (work) on a milling machine in order to repeat the milling operation at a new position.
25.Economics. to adjust (wages, taxes, etc.) automatically according to changes in the cost-of-living level or another economic indicator, esp. to offset inflation.
[Origin: 1350–1400; ME < L: informer, pointer, equiv. to in- in-2 + -dec- (comb. form of dic-, show, declare, indicate; akin to teach) + -s nom. sing. ending]

—Related forms
in·dex·a·ble, adjective
in·dex·er, noun
in·dex·i·cal, adjective
in·dex·i·cal·ly, adverb
in·dex·less, adjective
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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American Heritage Dictionary - Cite This Source - Share This
in·dex       (ĭn'děks')  Pronunciation Key 
n.   pl. in·dex·es or in·di·ces (-dĭ-sēz')
  1. Something that serves to guide, point out, or otherwise facilitate reference, especially:
    1. An alphabetized list of names, places, and subjects treated in a printed work, giving the page or pages on which each item is mentioned.
    2. A thumb index.
    3. A table, file, or catalog.
    4. Computer Science A list of keywords associated with a record or document, used especially as an aid in searching for information.
    5. Mathematics A number or symbol, often written as a subscript or superscript to a mathematical expression, that indicates an operation to be performed, an ordering relation, or a use of the associated expression.
    6. A number derived from a formula, used to characterize a set of data.
  2. Something that reveals or indicates; a sign: "Her face . . . was a fair index to her disposition" (Samuel Butler).
  3. A character () used in printing to call attention to a particular paragraph or section. Also called fist, hand.
  4. An indicator or pointer, as on a scientific instrument.
    1. Mathematics A number or symbol, often written as a subscript or superscript to a mathematical expression, that indicates an operation to be performed, an ordering relation, or a use of the associated expression.
    2. A number derived from a formula, used to characterize a set of data.
  6. A number that represents the change in price or value of an aggregate of goods, services, wages, or other measurable quantity in comparison with a reference number for a previous period of time.
  7. Index Roman Catholic Church A list formerly published by Church authority, restricting or forbidding the reading of certain books.

tr.v.   in·dexed, in·dex·ing, in·dex·es
  1. To furnish with an index: index a book.
  2. To enter in an index.
  3. To indicate or signal.
  4. To adjust through indexation.


[Middle English, forefinger, from Latin; see deik- in Indo-European roots.]

in'dex'er n.
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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Online Etymology Dictionary - Cite This Source - Share This
index 
1398, "the forefinger," from L. index (gen. indicis) "forefinger, pointer, sign, list," lit. "anything which points out," from indicare "point out" (see indicate). Meaning "list of a book's contents" is first attested 1580, from L. phrases such as Index Nominum "Index of Names," index expurgatorius "specification of passages to be deleted from works otherwise permitted." The verb meaning "compile an index" is from 1720. Scientific sense (refractive index, etc.) is from 1829; economic sense (cost-of-living index, etc.) is after 1886. The Church sense of "forbidden books" is from index librorum prohibitorum, first published 1564 by authority of Pius IV.

Online Etymology Dictionary, © 2001 Douglas Harper
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WordNet - Cite This Source - Share This
index

noun
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 
3. a mathematical notation indicating the number of times a quantity is multiplied by itself [syn: exponent] 
4. an alphabetical listing of names and topics along with page numbers where they are discussed 
5. the finger next to the thumb 

verb
1. list in an index 
2. provide with an index; "index the book" 
3. adjust through indexation; "The government indexes wages and prices" 

WordNet® 3.0, © 2006 by Princeton University.
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American Heritage New Dictionary of Cultural Literacy, Third Edition - Cite This Source - Share This
index

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.


The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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American Heritage Stedman's Medical Dictionary - Cite This Source - Share This

index in·dex (ĭn'děks')
n. pl. in·dex·es or in·di·ces (-dĭ-sēz')

  1. A guide, standard, indicator, symbol, or number indicating the relation of one part or thing to another in respect to size, capacity, or function.
  2. A core or mold used to record or maintain the relative position of a tooth or teeth to one another or to a cast.
  3. A guide, usually made of plaster, used to reposition teeth, casts, or parts.
  4. The index finger.
in'dex' v.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Investopedia - Cite This Source - Share This

Index

A statistical measure of change in an economy or a securities market. In the case of financial markets, an index is essentially an imaginary portfolio of securities representing a particular market or a portion of it. Each index has its own calculation methodology and is usually expressed in terms of a change from a base value. Thus, the percentage changes is more important that the actually numeric value. For example, knowing that a stock exchange is at, say, 5,000 doesn't tell you much. However, knowing that the index has risen 30% over the last year to 5,000 gives a much better demonstration of performance.

The plural of index can be spelled either indexes or indices.

Investopedia Commentary

The Standard &amp Poor's 500 is one of the world's best known indexes, and is the most commonly used benchmark for the stock market.

Technically, you can't actually invest in an index. Rather, you invest in a security such as an index fund or ETF that attempts to track an index as closely as possible.

Related Links

Index Investing Tutorial
A Market By Any Other Name
Indexes: The Good, The Bad And The Ugly

See also: DAX, DJIA, DJTA, DJUA, E-mini, ETF, FTSE, Index Arbitrage, Index Fund, Index Futures, Index Hugger, Index Option, Passive Management, S&P 500, Wilshire 5000 Index

Also spelled: Index, Indices, Indice

Investopedia.com. Copyright © 1999-2005 - All rights reserved. Owned and Operated by Investopedia Inc.
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Wallstreet Words - Cite This Source - Share This

index

The relative value of a variable in comparison with itself on a different date. Many security price indicators such as the Standard & Poor's series and the New York Stock Exchange series are constructed as indexes. Also called stock index. See also base period.

Wall Street Words: An A to Z Guide to Investment Terms for Today's Investor by David L. Scott.
Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Wallstreet Words - Cite This Source - Share This

index

To adjust a variable by a selected measure of relative value. For example, it has been proposed that an investor's basis on a security be indexed for changes in consumer prices so that only real increases in value will be taxed. Also called tax indexing. See also subindex.

Wall Street Words: An A to Z Guide to Investment Terms for Today's Investor by David L. Scott.
Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Merriam-Webster's Dictionary of Law - Cite This Source - Share This
Main Entry: in·dex
Function: noun
: a numerical measure or indicator (as of inflation or economic performance) —see also CONSUMER PRICE INDEX

Merriam-Webster's Dictionary of Law, © 1996 Merriam-Webster, Inc.
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Merriam-Webster's Dictionary of Law - Cite This Source - Share This
Main Entry: index
Function: transitive verb
: to link (as wages, rates, or investments) to an index indexed to inflation>

Merriam-Webster's Dictionary of Law, © 1996 Merriam-Webster, Inc.
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Free On-line Dictionary of Computing - Cite This Source - Share This

index
(Plural "indices" or "indexes")
1. A number used to select an element of a list, vector, array or other sequence. Such indices are nearly always non-negative integers but see associative array.
2. See inverted index. [Other kinds?]
3. A search engine.
4. A subject index.
[The Jargon File]
(1997-04-09)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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U.S. Gazetteer - Cite This Source - Share This

Index, WA (town, FIPS 33175) Location: 47.82071 N, 121.55239 W
Population (1990): 139 (102 housing units)
Area: 0.7 sq km (land), 0.0 sq km (water)

U.S. Gazetteer, U.S. Census Bureau
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Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Index

In"dex\, n.; pl. E. Indexes, L. Indices(?). [L.: cf. F. index. See Indicate, Diction.]

1. That which points out; that which shows, indicates, manifests, or discloses.

Tastes are the indexes of the different qualities of plants. --Arbuthnot.

2. That which guides, points out, informs, or directs; a pointer or a hand that directs to anything, as the hand of a watch, a movable finger on a gauge, scale, or other graduated instrument. In printing, a sign [[hand]] used to direct particular attention to a note or paragraph; -- called also fist.

3. A table for facilitating reference to topics, names, and the like, in a book; -- usually alphabetical in arrangement, and printed at the end of the volume.

4. A prologue indicating what follows. [Obs.] --Shak.

5. (Anat.) The second digit, that next pollex, in the manus, or hand; the forefinger; index finger.

6. (Math.) The figure or letter which shows the power or root of a quantity; the exponent. [In this sense the plural is always indices.]

Index error, the error in the reading of a mathematical instrument arising from the zero of the index not being in complete adjustment with that of the limb, or with its theoretically perfect position in the instrument; a correction to be applied to the instrument readings equal to the error of the zero adjustment.

Index expurgatorius. [L.] See Index prohibitorius (below).

Index finger. See Index, 5.

Index glass, the mirror on the index of a quadrant, sextant, etc.

Index hand, the pointer or hand of a clock, watch, or other registering machine; a hand that points to something.

Index of a logarithm (Math.), the integral part of the logarithm, and always one less than the number of integral figures in the given number. It is also called the characteristic.

Index of refraction, or Refractive index (Opt.), the number which expresses the ratio of the sine of the angle of incidence to the sine of the angle of refraction. Thus the index of refraction for sulphur is 2, because, when light passes out of air into sulphur, the sine of the angle of incidence is double the sine of the angle of refraction.

Index plate, a graduated circular plate, or one with circular rows of holes differently spaced; used in machines for graduating circles, cutting gear teeth, etc.

Index prohibitorius [L.], or Prohibitory index (R. C. Ch.), a catalogue of books which are forbidden by the church to be read; the index expurgatorius [L.], or expurgatory index, is a catalogue of books from which passages marked as against faith or morals must be removed before Catholics can read them. These catalogues are published with additions, from time to time, by the Congregation of the Index, composed of cardinals, theologians, etc., under the sanction of the pope. --Hook.

Index rerum [L.], a tabulated and alphabetized notebook, for systematic preservation of items, quotations, etc.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Index

In"dex\, v. t. [imp. & p. p. Indexed; p. pr. & vb. n. Indexing.] To provide with an index or table of references; to put into an index; as, to index a book, or its contents.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Index

In"dex\, n. The ratio, or formula expressing the ratio, of one dimension of a thing to another dimension; as, the vertical index of the cranium.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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