The following definitions are taken from ACM Interim Copyright Policies, which may be found at this URL or in . These definitions are themselves copyright by ACM as per the following notice:
Copyright 1995 © by ACM, Inc. Permission to copy and distribute this document is hereby granted provided that this notice is retained on all copies, that copies are not altered, and that ACM is credited when the material is used to form other copyright policies.
Edited: a collection of works have been selected by an editor and possibly edited for style and length.
Reviewed: one or more experts have examined the work and have given assessments to an editor about clarity, soundness, novelty, prior publication, proper citations, and other criteria.
Formally reviewed: A thorough review with emphasis on clarity, accessibility to the general reader, and timeliness. Persons serving as formal reviewers are independent of the editors who request their advice.
Refereed: A thorough review with emphasis on novelty and soundness. A journal refereeing process seeks to advise the editor whether to reject or provide specific guidance for revisions. A conference refereeing process seeks to advise the editor whether to accept or reject; a strict deadline is enforced. Persons serving as referees are independent of the editors who request their advice.
Journal, Transactions: generic names given to ACM refereed periodical publications.
Communications, Surveys, Interactions, StandardView: four ACM formally reviewed periodical publications.
Proceedings: the reviewed or refereed record of a conference.
Newsletters, Bulletins: edited and/or reviewed periodic publications that inform members of groups about relevant news.