A multispectral sensor records a few to a few tens of bands, separated by gaps. A hyperspectral sensor records many narrow, contiguous bands, so that every pixel carries a nearly continuous spectrum that can be compared with a library such as the one of the figure above.
Earth and Space Sciences · Glossary
What is Multispectral and hyperspectral sensors?
Also known as: multispectral sensor · hyperspectral sensor