hahnium

American  

[hah-nee-uhm] / ˈhɑ ni əm /

noun

Chemistry, Physics.

1. a proposed but never officially adopted name for element 105, which was instead named dubnium. Ha

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hahnium British  

/ ˈhɑːnɪəm /

noun

1. a name once advanced by the American Chemical Society for a transuranic element, artificially produced from californium, atomic no: 105; half-life of most stable isotope, ²⁶² Ha: 40 seconds Now called dubnium

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Etymology

Origin of hahnium

First recorded in 1965–70; named after German chemist Otto Hahn ( def. ); -ium ( def. )

Example Sentences

Ghiorso, Nuclear Chemist James Harris, Finnish Physicists Matti Nurmia and Kari Eskda, the same team that discovered element 104, suggested that the new element be named hahnium, in honor of Otto Hahn, the German chemist who in 1938 discovered nuclear fission.

From Time Magazine Archive