a person responsible for the editorial aspects of publication; the person who determines the final content of a text (especially of a newspaper or magazine)
"The senior editor rejected the article because it lacked sufficient supporting evidence."
(computer science) a program designed to perform such editorial functions as rearrangement or modification or deletion of data
"The software editor automatically deleted all duplicate entries from my database before saving the file."
A person who edits or makes changes to documents.
"The editor spent all afternoon correcting typos and improving the flow of our article before publishing it."
In plain English: An editor is someone who checks and changes writing to make it better.
"The editor fixed several typos before publishing the article."
Usage: An editor is a person responsible for reviewing and correcting written material before publication. This role involves checking for grammar errors, improving clarity, and ensuring the content meets specific standards.
The word editor comes from the Medieval and Late Latin term for someone who "gives out" or publishes something. It entered English to describe a person responsible for preparing text for publication.