from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An artificially produced radioactive element with atomic number 108 whose most long-lived isotopes have mass numbers of 264 and 265 with half-lives of 0.08 milliseconds and 2 milliseconds, respectively. Also called unniloctium. See Table at element.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An artificially-produced transuranic chemical element (symbol Hs) with atomic number 108.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a radioactive transuranic element
From Medieval Latin Hassia, Hesse (German state containing Darmstadt, where the element was first synthesized).(American Heritage® Dictionary of the English Language, Fourth Edition)
From the Latin form of the German state of Hessen, the location of the institute where the element was first synthesized. (Wiktionary)