Definition: Microspectroscopy is a technique used in spectroscopy to study small molecules or particles by using an extremely low-power laser beam. This technique is particularly useful for studying materials with very small atomic size, such as proteins and DNA. The goal of microspectroscopy is to observe the shape and properties of these tiny particles under the influence of their environment. It is important in fields like biotechnology and drug discovery where it can be used to study the structure and function of biological molecules or drugs.