n.

1. 先例，前例；【律】判例[C]
   This decision sets a precedent for future cases of a similar nature.

   這一裁決為今後性質類似的案件提供了判例。

2. 慣例[U]
   The Queen has broken with precedent by sending her children to ordinary schools.

   女王破例讓自己的孩子去普通學校就讀。

a.

1. 在前的，在先的，前面的[（+to）]
   Voters demanded that the candidates keep the pledges made as a condition precedent to election.

   選民們要求把候選人對他們誓言的履行作為選舉的先行條件。

n.

adj.