invariant

[in-vair-ee-uh nt] /ɪnˈvɛər i ənt/
adjective
1.
unvarying; invariable; constant.
2.
Mathematics, normal (def 5e).
noun
3.
Mathematics. a quantity or expression that is constant throughout a certain range of conditions.
Origin
1850-55; in-3 + variant
Related forms
invariantly, adverb
British Dictionary definitions for invariants

invariant

/ɪnˈvɛərɪənt/
noun
1.
(maths) an entity, quantity, etc, that is unaltered by a particular transformation of coordinates: a point in space, rather than its coordinates, is an invariant
adjective
2.
(maths) (of a relationship or a property of a function, configuration, or equation) unaltered by a particular transformation of coordinates
3.
a rare word for invariable
Derived Forms
invariance, invariancy, noun
Word Origin and History for invariants

invariant

adj.

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