nebulium
noun
ne·bu·li·um
nə̇ˈbyülēəm,
neˈ-
plural -s
: a hypothetical chemical element formerly inferred from certain lines in the spectra of nebulae now believed to arise from transitions in oxygen and nitrogen that are forbidden under ordinary laboratory conditions
Word History
Etymology
New Latin, from nebula + -ium
- hyperbolas
- hyperbole
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