Ipatieff

/ ɪˈpætjɛf /

noun

1. IpatieffVladimir Nikolaievich18671952MUSRussianSCIENCE: physicist Vladimir Nikolaievich (ˈvlædɪmɪə ˌnɪkəˈlaɪəvɪtʃ). 1867–1952, US physicist, born in Russia. He discovered the structure of isoprene (1897) and later developed high-octane fuels