It is a word or phrase said "by the way". It is used in law, and refers to wording that may be in a judgment but that is not essential to the argument of the judgment. A judge may make reference to a...
Do you mean rationale? If so, obiter dictum is, by definition, not part of the rationale for deciding a case. It is extra language inserted by the judge that is not necessary in deciding the case....
None. Ratio decidendi sets forth the legal reasoning for the decision in a case. Obiter dictum is judicial opinion or incidental comments that are relevant, but not legally binding, because they're...