A more thorough explanation:

Term: fortior
Definition: Fortior is a legal term that means when one party has strong evidence, the burden of proof shifts to the other party. This means that the party with weaker evidence has to prove their case. Example: In a court case, the prosecution has strong evidence that the defendant committed the crime. This shifts the burden of proof to the defense, who must now prove that the defendant did not commit the crime. This example illustrates the definition of fortior because the prosecution's strong evidence shifts the burden of proof to the defense. The defense must now provide evidence to counter the prosecution's evidence.