outside diameter

Definitions

Cars & Driving

Electronics

  • For an object with two concentric diameters, such as a pipe, the diameter corresponding to the outer circumference. The inside diameter corresponds to the inner circumference. Its abbreviation is OD.
  • acronymOD

General English

  • noun a large amount of a drug taken at one time and causing illness or death
http://www.dictionarycentral.com/definition/outside-diameter.html