variance inflation factor; a variable with a VIF above 10 or a mean VIF significantly above 1 suffers from severe multicollinearity, which means this variable is highly correlated with other variables.
VIF
Meaning of VIF in English
Sean Woo's Finance, GIS and real estate English glossary. Английский глоссарий по ГИС(Географическая информационная система) и недвижимости Sean Woo's Finance. 2012