Dye inhibition was the method that the technicolor used to make color prints (think Gone with the Wind, Wizard of Oz) In camera there was a beam splitter that seperated the primary colors on to three stocks, one isochormatic (blue) & two pan (green, finally red) in bi pack. The dye inhibition process was done in the lab to combine the three color seperations to make the color print, basically think of bleaching out the silver and having a 'contour map' that adheres the complementary color dyes proportinally and then "cementing" these perfectly together in exact registration. Fascinating technology. You can read all about technicolor at the following link:
http://www.widescreenmuseum.com/oldcolor/technicolor1.htm
I had a cinematography professor who worked in Hollywood in the 50s-60s, he used to joke to us that technicolor required so much damn light that you'd get sunburnt on the set. "Back in my day the fastest film we had was 3! (Weston)"