invariant

/ɪnˈvɛriənt/
adjective
  1. Not changing; staying the same under different conditions.
    • The invariant laws of nature apply everywhere in the universe.
    • In the experiment, the temperature was kept invariant.
    • Her love for music remained invariant through all the years.
noun
  1. Something that does not change, especially in mathematics or science.
    • In geometry, distance is an invariant under rotation.
    • The programmer used an invariant to check that the data stayed consistent.
    • The total energy of a closed system is an invariant.
What does "invariant" mean? | whatsthatwordmean | whatsthatwordmean