octane rating
Defined in 1 place of the United States Code.
The term “octane rating” means the rating of the antiknock characteristics of a grade or type of automotive fuel as determined by dividing by 2 the sum of the research octane number plus the motor octane number, unless another procedure is prescribed under section 2823(c)(3) of this title, in which case such term means the rating of such characteristics as determined under the procedure so prescribed.
Source
- 1994–present15 U.S.C. § 2821Commerce and Trade · Definitions · as used in this subchapter