D defs.my
Entry 1 sense Webster, 1913

Invariance

/ĭnˌ-vĕr'-ē-əns/ · In·va·ri·ance · IPA /ɪnˈvæɹ.i.əns/
01 n. The property of remaining invariable under prescribed or implied conditions.
  1. 1.
    The property of remaining invariable under prescribed or implied conditions.(Math.)