fixity

Definition of Fixity in English :

the quality of being fixed in place as by some firm attachment

the quality of being incapable of mutation

Example Sentences:
'Darwin challenged the fixity of species'

WordNet Lexical Database for English. Princeton University. 2010.

Fixity

noun plural -ties

1.

the state or quality of being fixed; stability

2.

something that is fixed; a fixture

noun

1.

the quality or state of being fixed; steadiness or permanence

2. Word forms: plural ˈfixities

anything fixed, or unmoving

n. pl. fix·i·ties

1. The quality or condition of being fixed.

2. Something fixed or immovable.