hassium

has·si·um  (häs-m)

n. Symbol Hs

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.

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[From Medieval Latin Hassia, Hesse (German state containing Darmstadt, where the element was first synthesized).]

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hassium [ˈhæsɪəm]

n

(Chemistry / Elements & Compounds) a synthetic element produced in small quantities by high-energy ion bombardment. Symbol: Hs; atomic no. 108

[from Latin, from Hesse, German state where it was discovered]

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hassium  (häs-m)

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.

Thesaurus

Noun

1.

hassium - a radioactive transuranic element atomic number 108, element 108, Hs chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter