invariant

[in-vair-ee-uh nt]

adjective

unvarying; invariable; constant.
Mathematics. normal(def 5e).

noun

Mathematics. a quantity or expression that is constant throughout a certain range of conditions.

Origin of invariant

First recorded in 1850–55; in-³ + variant

Related formsin·var·i·ant·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for invariantly

invariant

noun

maths an entity, quantity, etc, that is unaltered by a particular transformation of coordinatesa point in space, rather than its coordinates, is an invariant

adjective

maths (of a relationship or a property of a function, configuration, or equation) unaltered by a particular transformation of coordinates
a rare word for invariable

Derived Formsinvariance or invariancy, noun

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 invariantly

invariant

adj.

1851, from in- (1) "not" + variant.