PolarisPronunciation: /pəˈlɑːrɪs/Definition of Polaris 1 Astronomy the Pole Star. 2a type of submarine-launched ballistic missile designed to carry nuclear warheads, formerly in service with the US and British navies. Origin: mid 19th century: from medieval Latin polaris 'heavenly', from Latin polus 'end of an axis'Polaris in other Oxford dictionaries Definition of Polaris in the US English dictionary
