14 CFR (Chapter I - Federal Aviation Administration) § 5.5 - Definitions
14 CFR (Chapter III - Commercial Space Transportation) § 401.5 - Definitions
ASME B1.7-2006 "Screw Threads: Nomenclature, Definitions, and Letter Symbols"
Defense Acquisition University (DAU) "Glossary of Defense Acquisition Acronyms and Terms"
ISACA (Information Systems Audit and Control Association) - Glossary
International Electrotechnical Commission Glossary
ISO Online Browsing Platform "Terms & Definitions"
Glossary – Guidance on selected words used in the ISO 9000 family of standards (PDF)
NIST Engineering Statistics Handbook - Glossary
SPC Glossary (from DataNet Quality Systems)