Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Hassium" Definition
noun
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.
Source: American Heritage Dictionary
A short-lived radioactive metallic element produced artificially .
Source: Merriam-Webster
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