API
Initialism of American Petroleum Institute.
Proper noun
- Initialism of American Petroleum Institute.
- Initialism of Additional Protocol I of 1977 to the four Geneva Conventions.
Related: AP I
Derived
Noun
- Initialism of active pharmaceutical ingredient.
- Initialism of application programming interface.
- Initialism of Asian and Pacific Islander.
Coordinate Terms: AAPI
- Initialism of advanced primer ignition.
- Initialism of armor-piercing incendiary.