what does np nd mean
Here are all the possible meanings and translations of the word NP. Princeton's WordNet(0.00 / 0 votes)Rate this definition: neptunium, Np, atomic number 93(noun) a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium.
Here are all the possible meanings and translations of the word ND. Princeton's WordNet(0.00 / 0 votes)Rate this definition: neodymium, Nd, atomic number 60(noun) a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium. North Dakota, Peace Garden State, ND(noun) a state of north central United States bordering on Canada.