independent variable

Pronunciation:			`indi'pendunt 'vehreeubul
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WordNet Dictionary
	Definition:		[n]  a variable in a logical or mathematical expression whose value determines the dependent variable; if f(x)=y, x is the independent variable
	Synonyms:		argument
	See Also:		variable, variable quantity
Glossary
	Definition:		the variable that can cause change in other variables.