IPA: //spɪˈsiːʃən//
KK: /spɪˈsiːʃən/
The process by which new biological species are formed, often when a single species divides into two or more distinct groups that cannot interbreed.
The speciation of the finches on the Galápagos Islands is a classic example of evolution in action.
Speciation → It is formed from "specere" (meaning to look or see) and the suffix "-ation" (indicating a process or action). The word "speciation" refers to the process of forming new and distinct species in the course of evolution, thus relating to the idea of 'looking' at the differences that define species.
Think of the process of 'looking' ('specere') at how new species are formed, which is what speciation means.