Using "math" instead of "mathematics" is an example of which word formation process?

The use of "math" instead of "mathematics" is an example of clipping. Clipping is a word formation process in which a longer word is shortened to create a new word, typically by removing one or more syllables. In this case, "mathematics" is trimmed down to "math," which retains the essential meaning while making it more concise and easier to use in casual conversation.

This process is common in the evolution of language, as shorter forms of words often become accepted in everyday usage. Other examples of clipping include "ad" from "advertisement" or "lab" from "laboratory." Clipping enhances communication efficiency, especially in informal contexts.