associate editor; deputy editor
A title for the second-in-command in an editorial department, directly under the editor-in-chief (編集長).
See also: 編集長
As deputy editor, he is in charge of planning for the magazine.
編集長 is the editor-in-chief, the top position; 副編集長 is the deputy or associate editor, one rank below.
Compound of 副 (vice-, deputy) + 編集 (editing) + 長 (chief).