D defs.my
Entry 1 sense Webster, 1913

Heterogeneity

/hĕtˌ-ẽr-əj-ĭn-ē'-ət-ē/ · Het·er·o·ge·ne·i·ty · IPA /hˌɛtərədʒɪnˈiːətiː/
01 n. The state of being heterogeneous; contrariety.
  1. 1.
    The state of being heterogeneous; contrariety.
    “The difference, indeed the heterogeneity, of the two may be felt.” Coleridge.