Dumont d'Urville
[ dy-mawn dyr-veel ]
/ dü mɔ̃ dürˈvil /
noun
Jules Sé·bas·tien Cé·sar
[zhyl sey-bas-tyan sey-zar] /ʒül seɪ basˈtyɛ̃ seɪˈzar/,1790–1842,
French naval officer: explored South Pacific and Antarctic.