IPA: //rɪˈfɛr.ən.dəm//
KK: /rɪˈfɛrəndəm/
A process in which the people vote directly on a specific proposal or law, often related to important issues or changes in government.
The government decided to hold a referendum to let citizens vote on the new tax law.
Referendum → It is formed from "referre" (meaning to bring back or carry back) and the suffix "-ndum" (indicating something that is to be). The word refers to a process where a decision is brought back to the people for a vote.
Think of a decision being 'brought back' ('referre') to the people for their input — that's what a referendum is.