IPA: /ˌprɒpəˈɡeɪʃən/
KK: /prɑːpəˈɡeɪʃən/
The process of increasing or spreading something, such as plants or waves, to a larger area or greater number.
The propagation of sound waves can be affected by the medium through which they travel.
Propagation → It is formed from "pro-" (meaning forward) and "pagare" (meaning to set or to fix). The word refers to the act of setting or spreading something forward, such as ideas or plants.
Think of 'setting something forward' — 'pro-' means forward, and 'pagare' means to set. This helps you remember that propagation is about spreading or extending something.