sexual transmitted disease defintion
sexually transmitted disease (STD), an infectious disease usually acquired by sexual intercourse or genital contact. These diseases are among the most common communicable diseases, and the incidence has risen in recent years despite improved methods of diagnosis and treatment.exually transmitted disease (STD). A disease that is passed from one person to another through sexual intercourse or other intimate sexual contact. Also called STD. Mentioned in: Cephalosporins, Fluoroquinolones.