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English to English noun
| 1 |
the quality of being fixed in place as by some firm attachment |  | source: wordnet30
| 2 |
the quality of being incapable of mutation |  | Example: Darwin challenged the fixity of species
source: wordnet30
| 3 |
Fixedness; as, fixity of tenure; also, that which is fixed. |  | source: webster1913
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