hassium

noun

has·​si·​um ˈha-sē-əm 

: a short-lived radioactive metallic element produced artificially see Chemical Elements Table

Word History

Etymology

New Latin, from Hassia Hesse (German state), location of the laboratory that first produced the element

First Known Use

1992, in the meaning defined above

Kids Definition

hassium

noun

has·​si·​um ˈhas-ē-əm 

: a short-lived radioactive element produced artificially see element

Etymology

from Hassia "Hesse," name of the German state containing the laboratory that first produced the element

Medical Definition

hassium

noun

has·​si·​um

ˈha-sē-əm

: a short-lived radioactive element produced artificially

—symbol Hs see Chemical Elements Table