verb (used with object), proofread [proof-red] , proofreading [proof-ree-ding] .
to read (printers' proofs, copy, etc.) in order to detect and mark errors to be corrected.
verb (used without object), proofread [proof-red] , proofreading [proof-ree-ding] .
to read printers' proofs, copy, etc., to detect and mark errors, especially as an employee of a typesetting firm, newspaper office, or publishing house.

1930–35; back formation from proofreader (see proof, read)

proofreader, noun
unproofread [uhn-proof-red] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
proofread (ˈpruːfˌriːd)
vb , -reads, -reading, -read
to read (copy or printer's proofs) to detect and mark errors to be corrected

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Encyclopedia Britannica


reading and marking corrections on a proof or other copy of the text of articles and books before publication. Proofreading dates from the early days of printing. A contract of 1499 held the author finally responsible for correction of proofs. In modern practice, proofs are made first from a galley, a long tray holding a column of type, and hence are called galley proofs; the term is sometimes also used for the first copy produced in photocomposition and other forms of typesetting that do not involve metal type.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The author must have used spell check without taking the time to do any editing
  or proofreading.
Proofreading software should only be the first line of quality control.
It's my own fault, for screwing things up at the proofreading stage.
Even now, writers of all ages catch fewer errors when proofreading their own
  work printed in legible fonts than in difficult ones.
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