D defs.my
Entry 1 sense Webster, 1913

Bitumen process

· Bi·tu·men proc·ess · IPA
01 Any process in which advantage is taken of the fact that prepared bitumen is rendered insoluble by exposure to light, as in photolithography.
  1. 1.
    Any process in which advantage is taken of the fact that prepared bitumen is rendered insoluble by exposure to light, as in photolithography.(Photog.)