API, Math-API

JS developers will often also refer to this object as the Math API. You can think of an API (application programming interface) as a human-machine interface which allows a programmer to access the functionality essential for developing software. Depending on the given situation, this functionality can involve definitions, protocols, etc. In JS, an API generally refers to a set of functions which all relate to a specific topic. For example, the Math API allows you to access all the mathematical functionality available in JS.

https://en.owl.institute/my-account/my-courses/363602/947713/math-because-the-whole-is-greater-than-the-sum-of-its-parts#toc_ref_8.1