Step 1: Understand the terminology.
\textit{Ratione temporis} is a Latin term meaning "by reason of time.
" It refers to the temporal (time-related) jurisdiction of a court.
Step 2: Analyze Article 11 of the Rome Statute.
The Rome Statute established the International Criminal Court (ICC).
Article 11 specifically deals with its temporal jurisdiction.
It explicitly states that the Court has jurisdiction only with respect to crimes committed after the entry into force of the Statute.
Step 3: Conclude the meaning.
This means the ICC's jurisdiction is not retrospective.
It cannot prosecute crimes that were committed before the Statute became legally binding for a particular state.
The core principle is that the court may only exercise jurisdiction for crimes committed after the entry into force of this Statute.