noun which may take the genitive case particle 'no'
prior; beforehand; in advance; ex ante
Refers to something happening or being arranged before the relevant event or fact. Common in practical expressions such as 事前に確認する and 事前の予約.
See also: 事後
会議の資料は事前に送ってください。
Please send the meeting materials in advance.
This restaurant requires an advance reservation.
事故を防ぐには事前の確認が大切だ。
Prior checking is important for preventing accidents.