Definition: NMR stands for Nuclear Magnetic Resonance, which is a type of spectroscopy that allows researchers to look at atoms and molecules by using magnetic fields. It's used in various fields like chemistry, biology, and physics to study atomic and molecular structures. The definition of "nmra" can be quite broad, but here are some key details: NMR stands for Nuclear Magnetic Resonance, which is a type of spectroscopy that allows researchers to look at atoms and molecules by using magnetic fields. - It's used in various fields like chemistry, biology, and physics to study atomic and molecular structures.