Noun. A useful consolidation of material scattered across various sources. Arguably, this definition could also be applied to a vacuum cleaner.
This academic journal publishes academic review articles on subjects related to the field.
Noun. A periodic publication, usually online and in print, that publishes peer-reviewed research in a particular field of study.
Nature is an academic journal.
Academic journals are excellent sources of information; they are usually more reliable than the news media and Facebook posts.