### Question
How is the "traumatic brain injury" defined?


### Answer
The term **traumatic brain injury** is defined in *42 U.S.C. § 300d* as follows -

> an acquired injury to the brain

#### Citation:
  - *42 U.S.C. § 300d*
  - Heading: **CHAPTER 6A-PUBLIC HEALTH SERVICE > SUBCHAPTER X-TRAUMA CARE > Part F-Interagency Program for Trauma Research**

