neptunium
n.
1941, from Neptune + element ending -ium. Named for its relative position in the periodic table, next after Uranium, as the planet Neptune is one beyond Uranus. See also plutonium.
| 词汇 | neptunium |
| 词根词缀 | Online Etymology Dictionary neptunium n. 1941, from Neptune + element ending -ium. Named for its relative position in the periodic table, next after Uranium, as the planet Neptune is one beyond Uranus. See also plutonium. |
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