Np n 1: a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium [syn: {neptunium}, {atomic number 93}] 2: a registered nurse who has received special training and can perform many of the duties of a physician [syn: {nurse practitioner}, {nurse clinician}]
NP{nondeterministic polynomial time}. [{Jargon File}] np The {country code} for Nepal. (1999-01-27)