fixity
noun/ˈfɪksəti/
/ˈfɪksəti/
[uncountable] (formal)- the quality of being permanent and not changing
- He has great fixity of purpose.
- the fixity of exchange rates
Word Originmid 17th cent. (denoting the property of a substance of not evaporating or losing weight when heated): partly from obsolete fix ‘fixed’, partly from French fixité.
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fixity