Thin transparent or semi-transparent glazes rubbed into the ground in the initial phases of an oil painting. From the French term "frotter", meaning "to rub". Found on http://www.encyclo.co.uk/local/21274
Thin transparent or semi-transparent glazes rubbed into the ground in the intitial phases of an oil painting. From the French term 'frotter', meaning 'to rub' Found on http://www.watercolorpainting.com/glossary.htm