| actinon |
actinoid: any of a series of radioactive elements with atomic numbers 89 through 103
출처: wordnet.princeton.edu/perl/webwn
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| actinon |
A radioactive gas, symbol An; an inert gaseous element that is an isotope of radon and thoron. Actinon is a member of the uranium
출처: amsglossary.allenpress.com/glossary/browse
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