Definition of probable cause in the Legal Dictionary – by Free online English dictionary and encyclopedia. What is probable cause? Meaning of probable cause as a. In United States criminal law, probable cause is the standard by which police authorities have reason to obtain a warrant for the arrest of a suspected criminal. DEFINITIONProbable cause is a requirement found in the Fourth Amendment that must usually be met before police make an arrest, conduct a search, or receive a warrant. Probable cause generally refers to the requirement in criminal law that police have adequate reason to arrest someone, conduct a search, or seize property relating Probable cause is the legal standard by which a police officer has the right to make an arrest, conduct a personal or property search, or to obtain a warrant for arrest. Probable cause: When there is more evidence in favor of something than against or when there are reasonable grounds for believing the truth of an assertion, which is. Detectives Hudson and Davis stop at nothing to bring criminals to justice, but when their worlds get turned upside down by startling revelations, they fight to keep. ‘Probable cause’ requires more than a mere suspicion that a suspect committed a crime, but not an absolute certainty. Define probable cause: a reasonable ground for supposing that a charge is well-founded — probable cause in a sentence “Probable cause” is the standard by which judges evaluate many police actions.