Law dictionary
Terms of art, defined, with the authority each rests on. A term means what the system you are in says it means — so every entry names its jurisdiction, or says plainly that it has none.
2 entries
Ratio decidendiratio decidendi
The legal principle on which a decision rests — the reasoning necessary to the outcome. It is the part of a judgment that binds later courts.
Res judicatares judicata
A matter already judged. A final decision by a competent court prevents the same parties from relitigating the same cause of action.