[ in-deks ]
/ ˈɪn dɛks /

noun, plural in·dex·es, in·di·ces [in-duh-seez] /ˈɪn dəˌsiz/.

verb (used with object)

Nearby words

  1. indeterminate equation,
  2. indeterminate sentence,
  3. indeterminate vowel,
  4. indetermination,
  5. indeterminism,
  6. index card,
  7. index case,
  8. index crime,
  9. index expurgatorius,
  10. index extensor muscle

Origin of index

1350–1400; Middle English < Latin: informer, pointer, equivalent to in- in-2 + -dec- (combining form of dic-, show, declare, indicate; akin to teach) + -s nominative singular ending

Related forms
Can be confusedappendix index supplement (see synonym study at appendix) Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for index

British Dictionary definitions for index


/ (ˈɪndɛks) /

noun plural -dexes or -dices (-dɪˌsiːz)

verb (tr)

Derived Formsindexer, nounindexless, adjective

Word Origin for index

C16: from Latin: pointer, hence forefinger, title, index, from indicāre to disclose, show; see indicate

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for index
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for index


[ ĭndĕks′ ]

n. pl. in•dex•es

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

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Culture definitions for 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 New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.