As indicated in the fifth edition of the Publication Manual, dictionaries are not the best guide to spelling in the electronic world.

This is an extremely fast-moving environment: common usage develops quickly, leaving print resources easily bypassed.

The APA Style site will attempt to be more responsive. Below is a list of common terms and their preferred spelling.

• database
• DOI
• e-journal
• e-mail
• FTP
• Internet
• LISTSERV* (tm) – the generic term is electronic mailing list
• online
• PDF
• SGML
• URL
• Web

*LISTSERV is a trademarked, proprietary term; unless you know that is what is being used, you should use "electronic mailing list" rather than the, admittedly, more commonly used "list server."

Electronic Media and URLs
Citations in Text of Electronic Material