unnilhexium

[yoo-nil-hek-see-uhm]

noun

Chemistry, Physics.

1. the systematic element name for element 106 before being named seaborgium. Unh

Word History and Origins

Origin of unnilhexium¹

First recorded in 1975–80; from Latin ūn(us) “one”+ nil ( def. ) “zero” + Greek héx “six” + -ium ( def. )