radial velocityEnglishOxford New American Dictionaryradial velocity /ˌrādēəl vəˈläsədē, ˌreɪdiəl vəˈlɑsədi/ ▸ noun mainly Astronomy the velocity of a star or other body along the line of sight of an observer.
EnglishOxford New American DictionaryEnglishOxford New American Dictionary
EnglishOxford New American Dictionary