IPA: //sʌbˈɛdɪt//
KK: /sʌbˈɛdɪt/
To make changes and corrections to a text, usually to improve clarity and accuracy before publication.
The journalist had to subedit the article before it could be printed in the magazine.
Past: subedited
Past Participle: subedited
Subedit is formed from "sub-" (meaning under) and "edit" (from Latin "editus", meaning to put forth or publish). The word refers to the act of editing something that is under the main editorial authority, often involving a secondary level of editing.
Think of 'sub-' meaning 'under' and 'edit' meaning 'to publish' — so subedit means to edit something that is under the main publication.