Words Like NEPTUNIUM

We have put together a list of words that are similar to NEPTUNIUM.

1 Alternative Words Similar to neptunium

1 Metal Noun      Synonym Words Like Metal

3 definitions of neptunium

1 In chem., a supposed new element announced by Hermann in 1877 as present in columbite and ferro-ilmenite. Its existence has not been confirmed.
2 The transuranic chemical element with atomic number 93 and symbol Np.
3 a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium
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