### Question
Can you define what high intensity discharge lamp means?


### Answer
**High intensity discharge lamp** is defined as the following in *42 U.S.C. § 6291*:

> an electric-discharge lamp in which—


(i) the light-producing arc is stabilized by the arc tube wall temperature

#### Citation:
  - *42 U.S.C. § 6291*
  - Heading: **CHAPTER 77-ENERGY CONSERVATION > SUBCHAPTER III-IMPROVING ENERGY EFFICIENCY > Part A-Energy Conservation Program for Consumer Products Other Than Automobiles**

