1. n. [Geology]
The movement of tectonic plates toward each other, generating compressional forces and ultimately resulting in collision, and in some cases subduction, of tectonic plates. The boundary where tectonic plates converge is called a convergent margin.
2. n. [Geophysics]
In mathematics, the process in which a sequence of numbers approaches a fixed value called the "limit" of the sequence. This term is often used in modeling or inversion to describe the situation in which a sequence of calculated values approach, or converge with, measured values.