- bilocular muscular stomach
a special stomach characterised by the presence of a large aponeurosis (flat tendon) at the bend of the stomach, the centrum tendineum. In this type of stomach the lesser curvature is usually considerably expanded and can no longer be designated as an angulus or fold. The musculature (mm. laterales (ventriculi)) radiates out fan-like from both sides of the centrum tendineum, producing two thick swellings and giving the whole structure the form of a laterally flattened egg, e.g. in Mormyridae
Dictionary of ichthyology. 2009.