hassium

[ has-ee-uh m ]
/ ˈhæs i əm /

noun Chemistry, Physics.

a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Hs; atomic number: 108.
Formerly unniloctium, element 108.

Origin of hassium

after Medieval Latin Hassia (the German state of Hesse, location of the institute where it was first created); see -ium

British Dictionary definitions for hassium

hassium
/ (ˈhæsɪəm) /

noun

a synthetic element produced in small quantities by high-energy ion bombardment. Symbol: Hs; atomic no: 108

Word Origin for hassium

C20: from Latin, from Hesse, German state where it was discovered

Scientific definitions for hassium

hassium
[ häsē-əm ]

Hs

A synthetic, radioactive element that is produced by bombarding lead with iron ions. Its known isotopes have mass numbers ranging from 263 to 277. Hs 277 has the longest confirmed half-life (16.5 minutes). Atomic number 108. See Periodic Table.