Signs and symptoms of an effusion vary depending on the underlying disease, but dyspnea, cough, and pleuritic chest pain are common. Chest examination of a patient with pleural effusion is notable for dullness to percussion, decreased or absent tactile fremitus, decreased breath sounds, and no voice transmission.
Medical Definition of velamentous insertion. : attachment of the umbilical cord to the chorion beyond the margin of the placenta.
Definition of LANCELET. : any of a subphylum (Cephalochordata) of small translucent marine primitive chordate animals that are fishlike in appearance and usually live partially buried on the ocean floor âcalled also amphioxus.See lancelet defined for kids.efinition of LANCELET. : any of a subphylum (Cephalochordata) of small translucent marine primitive chordate animals that are fishlike in appearance and usually live partially buried on the ocean floor âcalled also amphioxus. See lancelet defined for kids. ADVERTISEMENT.