index

Plural: index's, indexes, indices

Noun

A reference guide, usually alphabetical, found at the end of a book.
a numerical scale used to compare variables with one another or with some reference number
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
a mathematical notation indicating the number of times a quantity is multiplied by itself
an alphabetical listing of names and topics along with page numbers where they are discussed
the finger next to the thumb
An alphabetical listing of items and their location.
The index finger; the forefinger.
A movable finger on a gauge, scale, etc.
A symbol resembling a pointing hand, used to direct particular attention to a note or paragraph.
That which points out; that which shows, indicates, manifests, or discloses.
A sign; an indication; a token.
A type of noun where the meaning of the form changes with respect to the context; e.g., 'Today's newspaper' is an indexical form since its referent will differ depending on the context. See also icon and symbol.
A single number calculated from an array of prices or of quantities.
A number representing a property or ratio; a coefficient.
A raised suffix indicating a power.
An integer or other key indicating the location of data, e.g. within an array, vector, database table, associative array, or hash table.
A data structure that improves the performance of operations on a table.
The number of cosets that exist.
A prologue indicating what follows.

Verb

Verb Forms: indexed, indexing, indexes

To provide with an index; to list alphabetically.
list in an index
provide with an index
- "index the book"
adjust through indexation
- "The government indexes wages and prices"
To arrange an index for something, especially a long text.
To inventory; to take stock.
To normalise in order to account for inflation; to correct for inflation by linking to a price index in order to maintain real levels.
To measure by an associated value.
To be indexical for (some situation or state of affairs); to indicate.
To access a value in a data container by an index.
To use a mechanism to move an object to a precise location.

Examples

He consulted the game’s official word index before challenging the play.
He isn't able to find the index of the book.
He wanted to index all the two-letter words in Scrabble for quick reference.
MySQL does not index short words and common words.
The index of 2ℤ in ℤ is 2.
The index of a book lists words or expressions and the pages of the book upon which they are to be found.

Origin / Etymology

From Latin index (“a discoverer, informer, spy; of things, an indicator, the forefinger, a title, superscription”), from indicō (“point out, show”); see indicate.

Synonyms

exponent, forefinger, index finger, index number, indicant, indicator, power, arrow-finger, demonstrator, first finger, index, lickpot, manicule, pointer, pointer finger, pointling, showing finger, teacher, trigger finger

Scrabble Score: 13

index: valid Scrabble (US) TWL Word
index: valid Scrabble Word in Merriam-Webster MW Dictionary
index: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 14

index: valid Words With Friends Word