Neptunium Definition
nĕp-to͝onē-əm, -tyo͝o-
noun
A silver-colored, radioactive, metallic chemical element, one of the actinides, produced by bombarding uranium atoms with neutrons: symbol, Np; at. no. 93
Webster's New World
Synonyms:
- atomic number 93
- np
Origin of Neptunium
After the planet Neptune (from the fact that it follows uranium in the periodic table)
From American Heritage Dictionary of the English Language, 5th Edition
-
After Neptune (the planet).
From Wiktionary
Find Similar Words
Find similar words to neptunium using the buttons below.