判はん決けつ理り由ゆう

noun

ratio decidendi; reason for a verdict

Legal term referring to the binding part of a judicial decision that sets a precedent. Used in formal legal contexts.

• 判はん決けつ理り由ゆうは、後のちの裁さい判ばんで先せん例れいとして引いん用ようされる。

  The ratio decidendi is cited as a precedent in later trials.

• 裁さい判ばん官かんは判はん決けつ理り由ゆうを詳くわしく説せつ明めいした。

  The judge explained the reason for the verdict in detail.