fixity

Noun	1.	fixity - the quality of being fixed in place fastness, fixedness, secureness, fixture immovability, immovableness - no capable of being moved or rearranged lodgement, lodging, lodgment - the state or quality of being lodged or fixed even temporarily; "the lodgment of the balloon in the tree"
	2.	fixity - the quality of being incapable of mutation; "Darwin challenged the fixity of species" immutability, immutableness unchangeability, unchangeableness, unchangingness, changelessness - the quality of being unchangeable; having a marked tendency to remain unchanged unalterability - the quality of not being alterable agelessness - the quality of being timeless and eternal

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