No 401k help center would be complete without a guide to the industry specific terminology associated with retirement plans. Untangle the jargon and learn what the insiders know.

Alphabetical Index of Retirement Plan Topics
Courtesy of the IRS, this alphabetical index provides information on a variety of retirement plan topics.

Commonly Used Retirement Plan Terms
Also created by the IRS, this glossary defines commonly used retirement plan terminology.

Glossary of Investment-Related Terms for Disclosures to Retirement Plan Participants (PDF)
Developed by The SPARK Institute and the Investment Company Institute, this downloadable PDF glossary defines common investment-related terms.