Definition of ratio decidendi in English:

ratio decidendi

Syllabification: ra·ti·o de·ci·den·di
Pronunciation: /ˌrāSHēō ˌdesəˈdendī, ˌrätēō ˌdesəˈdendē
 
/

noun (plural rationes decidendi /ˌrätēˈōnēz/)

Law
The rule of law on which a judicial decision is based.
More example sentences
  • Courts are bound by principles of law, the ratio decidendi of cases.
  • The former are described as being the ratio decidendi (reasons for the decision).
  • If property suddenly became available all over the country many of the rationes decidendi of the past would be quite inappropriate.

Origin

Latin, literally 'reason for deciding'.

Definition of ratio decidendi in: