### Question
What does highly enriched uranium mean?


### Answer
**Highly enriched uranium** has the following meaning in *42 U.S.C. § 2297*:

> uranium enriched to 20 percent or more of the uranium-235 isotope

#### Citation:
  - *42 U.S.C. § 2297*
  - Heading: **CHAPTER 22-INDIAN HOSPITALS AND HEALTH FACILITIES > Division B-United States Enrichment Corporation > SUBCHAPTER I-GENERAL PROVISIONS**

