1.NounAn edited or censored version of a document; a product resulting from the process of editing or censoring.
"The government supplied only the redaction to the reporters; the original was kept secret.; The content of this codex is a redaction of information from various earlier works. [≈ edited selection]"
2.NounThe change or changes made while editing.
3.NounThe process of editing or censoring.
"The Expense Claims made by Members of Parliament must be subject to redaction before publication under the Freedom of Information Act. [≈ censoring]"