Ratio decidendi

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The legal principle or rationale on which a judicial decision is based.

Etymology

Borrowed from Medieval Latin ratiō dēcidendī, from ratiō (“reckoning, method, reasoning”) + dēcidendī, genitive singular of dēcidendus, gerund of dēcidere (“to settle”).