名詞 referendum:

1. a legislative act is referred for final approval to a popular vote by the electorate

1. The question was decided by referendum.
   這問題是由全民投票決定的。

ref.er.en.dum

n.（名詞）
【復數(shù)】 ref.er.en.dums 或 ref.er.en.da [-d…]

The submission of a proposed public measure or actual statute to a direct popular vote.
公民復決：對擬通過或已通過的法案進行的直接公民投票
Such a vote.
公民復決投票
A note from a diplomat to the diplomat`s government requesting instructions.
請示書：外交使節(jié)致本國政府請求指示的短信

來源：
Latin [neuter gerundive of] referre [to refer] * see refer
拉丁語 [] referre的中性動形詞 [求助] *參見 refer