before; prior to
Expresses 'prior to' a formal event or action, often used in announcements and written Japanese.
This pattern means 'before' or 'prior to' and is used to refer to a point in time before a significant event or action. It carries a formal, almost ceremonial tone and is common in speeches, business correspondence, and news reports. In conversation, you would typically use 前に or まえに instead.
Note that に先立ち is a form of the set phrase に先立って, and both are used interchangeably in meaning. When the preceding element is a noun, it directly connects without の, but if it's a verb, use the dictionary form. For example, 出発に先立ち (before departure) and 会議に先立ち (before the meeting).
This pattern often appears in contexts where some preliminary action is taken ahead of a main event, such as preparations or briefings. It emphasizes the sequence more formally than 前に.