invariable

[ in-vair-ee-uh-buhl ]
/ ɪnˈvɛər i ə bəl /

adjective

not variable; not changing or capable of being changed; static or constant.

noun

something that is invariable; a constant.

Origin of invariable

late Middle English word dating back to 1400–50; see origin at in-3, variable

OTHER WORDS FROM invariable

in·var·i·a·bil·i·ty, in·var·i·a·ble·ness, noun in·var·i·a·bly, adverb

Example sentences from the Web for invariability

British Dictionary definitions for invariability

invariable
/ (ɪnˈvɛərɪəbəl) /

adjective

not subject to alteration; unchanging

noun

a mathematical quantity having an unchanging value; a constant

Derived forms of invariable

invariability or invariableness, noun