Electrospray is a technique widely used in the field of mass spectrometry, which involves emitting a stream of charged particles under the influence of an electric field. Although "electrospray" is a well-established term, there are several synonyms that can be used to describe this process. One of the most common alternatives is "electrospray ionization" or "ESI". Other possible synonyms include "electrostatic spray ionization", "electrohydrodynamic spray", or "field-assisted ionization". These terms all refer to the same basic process of creating charged droplets for analysis in mass spectrometry, but may be preferred by different researchers or in different contexts. Ultimately, regardless of the terminology used, electrospray remains a powerful tool for studying molecules and understanding their properties.