# inverse

[ adjective, noun in-vurs, in-vurs; verb in-vurs ]

/ adjective, noun ɪnˈvɜrs, ˈɪn vɜrs; verb ɪnˈvɜrs /

### adjective

reversed in position, order, direction, or tendency.

Mathematics.

- (of a proportion) containing terms of which an increase in one results in a decrease in another. A term is said to be in inverse proportion to another term if it increases (or decreases) as the other decreases (or increases).
- of or relating to an inverse function.Compare direct(def 16).

inverted; turned upside down.

### noun

### verb (used with object), in·versed, in·vers·ing.

to invert.

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## Nearby words

## Origin of inverse

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

## Examples from the Web for inverse

## British Dictionary definitions for inverse

## inverse

/ (ɪnˈvɜːs, ˈɪnvɜːs) /

### adjective

opposite or contrary in effect, sequence, direction, etc

maths

- (of a relationship) containing two variables such that an increase in one results in a decrease in the otherthe volume of a gas is in inverse ratio to its pressure
- (of an element) operating on a specified member of a set to produce the identity of the set: the additive inverse element of x is –x, the multiplicative inverse element of x is 1/x

(usually prenominal) upside-down; invertedin an inverse position

### noun

maths

- another name for reciprocal (def. 7)
- an inverse element

logic a categorial proposition derived from another by changing both the proposition and its subject from affirmative to negative, or vice versa, as all immortals are angels from no mortals are angels

Derived Formsinversely, adverb

## Word Origin for inverse

C17: from Latin inversus, from invertere to invert

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 inverse

## inverse

mid-15c., from Latin inversus, past participle of invertere (see invert). Related: Inversely. As a noun, 1680s, from the adjective.

Online Etymology Dictionary, © 2010 Douglas Harper

## Science definitions for inverse

## inverse

### Adjective

Relating to a mathematical operation whose nature or effect is the opposite of another operation. For example, addition and subtraction are inverse operations, as are multiplication and division.

### Noun

An inverse operation. Subtraction is the inverse of addition.

Either of a pair of elements in a set whose result under the mathematical operation of the set is the identity element. For example, the inverse of 5 under multiplication is 15, since 5 X 15 = 1, the identity element under multiplication. The inverse of 5 under addition is -5, since 5 + -5 = 0.

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.