The term "spirillum of Denecke" refers to a specific bacteria known as Spirillum minus. This bacterium, first identified by the German physician Georg Wilhelm Denecke, belongs to the genus Spirillum and is characterized by its spiral shape. Often associated with rat-bite fever, the spirillum of Denecke can cause a range of symptoms in infected individuals. When discussing this bacteria, it is important to mention its synonyms, which include Spirillum minor, Spirillum muris, and Spirillum obermeieri. These synonyms are alternate names for the same bacterium and are used interchangeably in scientific literature. Understanding these synonyms helps to ensure accurate and comprehensive communication within the field of bacteriology.