a person having managerial and sometimes policy-making responsibility for the editorial part of a publishing firm or of a newspaper, magazine, or other publication.
2.
the supervisor or conductor of a department of a newspaper, magazine, etc.: the sports editor of a newspaper.
3.
a person who edits material for publication, films, etc.
1640s, "publisher," from L. editus, from edere (see edition). By 1712 in sense of "person who prepares written matter for publication;" specific sense in newspapers is from 1803.