Someone who corrects printed material and prepares it for typesetting, printing, or online publishing(noun)
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Use "copy editor" in a sentence
"To the extraordinary team at Touchstone/Fireside, particularly editor Trish Todd and copy editor Patty Romanowski Bashe, for their faith in this project."
"The term benevolent compassion puzzled Noam Cohen, executive editor of Inside.com and a former copy editor at the New York Times."
"There was Debra Silverstein, a hyperactive assistant copy editor at Vanity Fair and admitted Anglophile."