illinium

illinium

[ih-lin-ee-uhm]
noun Chemistry, (formerly)
promethium. Symbol: Il

Origin:
1925–30; named after Illinois; see -ium

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illinium (ɪˈlɪnɪəm)
 
n
chem the former name for promethium
 
[C20: New Latin, from Illinois + -ium]

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