Definitions for "Wavenumber"
The number of wave crests per unit distance. Wavenumber is the reciprocal of wavelength. Wavenumbers are used extensively in infrared spectroscopy, and usually have units of cm-1.
reciprocal of wavelength measured in cm. Units of per cm.
1/wavelength, the units of wavenumbers are cm, and are most commonly used as the X axis unit in infrared spectra. m = 1,000 nm = 10,000 cm m = 5,000 nm = 2,000 cm