a proof of very good quality used for photographic reproduction to make a printing plate
Sometimes shortened to: repro, repro proof
repro proof in American English
noun
Printing
a proof, usually pulled on glossy paper, of a fidelity suitable for reproduction by photography for making a plate
Also called: repro, reproduction proof
Word origin
[1945–50]This word is first recorded in the period 1945–50. Other words that entered Englishat around the same time include: RNA, fail-safe, on-line, poison pill, synchronized swimming