AHDS Digital Preservation Glossary (PDF). January 2003.
Attributes of a Trusted Digital Repository, Appendix B (PDF) Document page 48, pdf page 52.
Definitions and Concepts from Preservation Management of Digital Materials: A Handbook by Maggie Jones and Neil Beagrie.
Glossary: JISC, useful for acronyms and focused on British organizations.
Inside CDL: Glossary, a glossary documenting general topics as well as the work at the California Digital Library.
International Research on Permanent Authentic Records in Electronic Systems (InterPARES) project glossary.
NEDLIB Glossary (PDF)
Reference Model for an Open Archival Information System (PDF) See section 1.7.2, document page 1-7, pdf page 16.
WikiPedia, especially for hardware and software terms.