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var‧i‧a‧ble1

1 likely to change often :
Expect variable cloudiness and fog tomorrow.
Expect variable cloudiness and fog tomorrow.2 sometimes good and sometimes bad :
The quality of pork is often less variable than beef.
The quality of pork is often less variable than beef.3 able to be changed :
The heater has variable temperature settings.
The heater has variable temperature settings. —variably adverb
—variability
noun [uncountable]
noun [uncountable]