# Glossary 17 federal contracting terms, each defined in its first sentence with the regulation or agency page it comes from. Plain definitions of federal contracting terms, from CAGE code and UEI to IDIQ, sole source and sources sought, each with its FAR or agency source.Checked on 2026-11-12.Official source: [Federal Acquisition Regulation](https://www.acquisition.gov/far) | Pages | 17 | | --- | --- | | Primary source | Federal Acquisition Regulation | ## About these glossary Plain definitions of federal contracting terms, from CAGE code and UEI to IDIQ, sole source and sources sought, each with its FAR or agency source. ## All glossary - [What is a CAGE code?](https://samgovapi.io/glossary/cage-code) - [What is a UEI number?](https://samgovapi.io/glossary/uei-number) - [What is a SAM registration?](https://samgovapi.io/glossary/sam-registration) - [What is EPLS?](https://samgovapi.io/glossary/epls) - [What is an IDIQ contract?](https://samgovapi.io/glossary/idiq) - [What is a GSA Schedule?](https://samgovapi.io/glossary/gsa-schedule) - [What is an RFQ?](https://samgovapi.io/glossary/rfq) - [What is an RFP?](https://samgovapi.io/glossary/rfp) - [What is an RFI?](https://samgovapi.io/glossary/rfi) - [What is a sources sought notice?](https://samgovapi.io/glossary/sources-sought) - [What is a sole source contract?](https://samgovapi.io/glossary/sole-source) - [What is a set-aside?](https://samgovapi.io/glossary/set-aside) - [What is the 8(a) program?](https://samgovapi.io/glossary/8a-program) - [What is a HUBZone?](https://samgovapi.io/glossary/hubzone) - [What is a NAICS code?](https://samgovapi.io/glossary/naics-code) - [What is a size standard?](https://samgovapi.io/glossary/size-standard) - [What is the FAR?](https://samgovapi.io/glossary/far)Updated 2026-11-12. Sources checked 2026-11-12.Independent. Not affiliated with, endorsed by or sponsored by GSA, SAM.gov or any U.S. government agency. Registering in SAM.gov is free at sam.gov.

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