n :  a usu. mild contagious disease esp. of young children that is caused by a picornavirus of the coxsackievirus group and is characterized by vesicular lesions in the mouth, on the hands and feet, and sometimes in the diaper-covered area - compare FOOT-AND-MOUTH DISEASE  .
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.