Try Our Apps


Avoid these words. Seriously.


[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 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
British Dictionary definitions for hassium


a synthetic element produced in small quantities by high-energy ion bombardment. Symbol: Hs; atomic no: 108
Word Origin
C20: from Latin, from Hesse, German state where it was discovered
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
hassium in Science
Symbol Hs
A synthetic, radioactive element that is produced by bombarding lead with iron ions. Its most long-lived isotopes have mass numbers of 264 and 265 with half-lives of 0.08 millisecond and 2 milliseconds, respectively. Atomic number 108. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Nearby words for hassium

Word Value for hassium

Scrabble Words With Friends