lexicography; dictionary editing
Refers to the practice or process of compiling, editing, or revising dictionaries.
He is an expert in lexicography.
Dictionary editing takes an enormous amount of time.
Similar meaning, but 辞典 often implies a reference work with encyclopedic content, while 辞書 is more strictly a language dictionary.
Compound of 辞書 (dictionary) and 編集 (editing, compilation). The exact historical derivation is straightforward; no further etymology is needed.