(pharmacology) Initialism of active pharmaceutical ingredient. / (programming) Initialism of application programming interface. / Initialism of Asian and Pacific Islander.

Initialism of American Petroleum Institute.

A mountain of the Himalayas in the western part of Nepal, near the border of Tibet.

(banking) Initialism of annual percentage yield.

Abbreviation of Anangu Pitjantjatjara Yankunytjatjara.; A local government area of Far North, South Australia, Australia; an Aboriginal Australian governing area

plural of API

plural of APY

(oil industry) A unit of radioactivity used for measuring natural gamma rays in the ground.

(oil industry) A specific gravity scale measuring the relative density of various petroleum liquids, expressed in degrees.

plural of API unit