Neptunium
Part of speech: noun
Definition: The transuranic chemical element with atomic number 93 and symbol Np.
Np
Part of speech: abbreviation
Definition: No problem; it was nothing; it's ok; don't mention it; you're welcome.no paginationno place (of publication)chemical element neptunium (element no. 93)in physics: Neper (unit of attenuation)notary publicneuropsychatric; neuropsychiatryno protestnoun phrasenurse-practitioner