Definitions for "Multicollinearity"
In statistical multiple regression models, when the independent variables are related between them, the problem of multicollinearity arises. It results in regression coefficients which may not be statistically significant as the coefficients of interrelated independent variables reflect – to a lesser or greater extent – the influence which one variable exerts on another.
A condition in which a set of predictor variables are highly correlated among themselves.
a case of multiple regression in which the predictor variables are themselves highly correlated