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Noun: immutability  i`myoo-tu'bi-lu-tee
  1. The quality of being incapable of mutation
    "Darwin challenged the immutability of species"
    - immutableness, fixity

Derived forms: immutabilities

See also: immutable

Type of: changelessness, unchangeability, unchangeableness, unchangingness

Antonym: mutability

Encyclopedia: Immutability