What does tetralogy of Fallot mean?
• TETRALOGY OF FALLOT (noun) The noun TETRALOGY OF FALLOT has 1 sense: 1. a congenital heart defect producing cyanosis; characterized by four symptoms: pulmonary stenosis and ventricular septal defect and malposition of the aorta over both ventricles and hypertrophy of the right ventricle Familiarity information: TETRALOGY OF FALLOT used as a noun is very rare.