press proof

plural press proofs

1. historicalmediaThe last proof for correction before sending to press.

   at press proof

   1 more example

   . It was five o'clock, but the foreman of the printing-plant said that if Helen would stay to proofread the new matter to be substituted, make the readjustments in make-up and O.K. the press proof, he would keep part of the composing staff there until twelve o'clock and the magazine could come out on time.

   1930, Doris Webster and Mary Alden Hopkins, Consider the Consequences!, H-12

   Synonyms: reader's proof

2. historicalmediaA proof taken on a press, especially to show impression, margins, colour, etc.