### Question
What is the definition of biodiesel?


### Answer
The definition of **biodiesel** is as follows in *7 U.S.C. § 8108*:

> a monoalkyl ester that meets the requirements of an appropriate American Society for Testing and Materials standard

#### Citation:
  - *7 U.S.C. § 8108*
  - Heading: **CHAPTER 107-RENEWABLE ENERGY RESEARCH AND DEVELOPMENT**

