What does it mean when a case is waived to a grand jury?

When a case is waived to a grand jury, it means that the prosecution has decided to bypass a preliminary hearing and instead present the case directly to a grand jury. This grand jury will evaluate the evidence to determine whether there is enough probable cause to formally indict the suspect and proceed to trial. Waiving to a grand jury can streamline the legal process and may occur in cases where the evidence is strong or the charges are severe.