unnilhexium

noun

un·​nil·​hex·​i·​um ˌyü-nᵊl-ˈhek-sē-əm 

: seaborgium

Word History

Etymology

New Latin, from unnil- (from Latin unus one + nil nothing, zero) + Greek hex six + New Latin -ium — more at one, nil, six

First Known Use

1974, in the meaning defined above

Medical Definition

unnilhexium

noun

un·​nil·​hex·​i·​um ˌyün-ᵊl-ˈhek-sē-əm 

: seaborgium

—symbol Unh