1an exchange of diverging or opposite views, typically a heated or angry one:I’ve had an argument with my fatherheated arguments over public spending [mass noun]:there was some argument about the decision
2a reason or set of reasons given in support of an idea, action or theory:there is a strong argument for submitting a formal appeal [with clause]:he rejected the argument that keeping the facility would be costly
3 Mathematics & Logic an independent variable associated with a function or proposition and determining its value. For example, in the expression y = F(x1, x2), the arguments of the function F are x1 and x2, and the value is y.