unnilseptium

[ yoo-nil-sep-tee-uh m ]
/ ˌyu nɪlˈsɛp ti əm /

noun Chemistry, Physics.

former name of bohrium.Symbol: Uns
Also called element 107.

Origin of unnilseptium

< Latin ūn(us) one + nīl nothing + sept(em) seven + New Latin -ium -ium

Words nearby unnilseptium

unnilennium, unnilhexium, unniloctium, unnilpentium, unnilquadium, unnilseptium, unnoticeable, unnoticed, unnumbered, uno, unobserved

Definition for unnilseptium (2 of 3)

bohrium
[ bawr-ee-uh m, bohr- ]
/ ˈbɔr i əm, ˈboʊr- /

noun Chemistry, Physics.

a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Bh; atomic number: 107.
Formerly unnilseptium, element 107.

Origin of bohrium

named after Danish physicist Niels Bohr; see -ium

Definition for unnilseptium (3 of 3)

element 107

noun Chemistry, Physics.

bohrium.
Formerly unnilseptium.

Origin of element 107

First recorded in 1975–80

British Dictionary definitions for unnilseptium

bohrium
/ (ˈbɔːrɪəm) /

noun

a transuranic element artificially produced in minute quantities by bombarding 204 Bi atoms with 54 Cr nuclei. Symbol: Bh; atomic no: 107 Former names: element 107, unnilseptium

Word Origin for bohrium

C20: after Neils Bohr

Scientific definitions for unnilseptium

bohrium
[ bôr′ē-əm ]

Bh

A synthetic, radioactive element that is produced by bombarding bismuth with chromium ions. Its most long-lived isotopes have mass numbers of 261, 262, and 264 with half-lives of 11.8 milliseconds, 0.1 second, and 0.44 second, respectively. Atomic number 107. See Periodic Table.