leverrier

noun

1. Ur·bain Jean Jo·seph [yr–ban zhahn zhaw-zef] /ürˈbɛ̃ ʒɑ̃ ʒɔˈzɛf/, 1811–77, French astronomer.

noun

1. Urbain Jean Joseph (yrbɛ̃ ʒɑ̃ ʒozɛf). 1811–77, French astronomer: calculated the existence and position of the planet Neptune