editing
US /ˈed.ɪ.t̬ɪŋ/
UK /ˈed.ɪ.t̬ɪŋ/

1.
the process of preparing written material for publication by correcting, condensing, or otherwise modifying it
:
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The final editing of the manuscript took several weeks.
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She specializes in academic editing.
2.
the process of selecting and preparing film, video, or audio material
:
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The film's success largely depended on its brilliant editing.
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He spent hours on the video editing.