a common venereal disease affecting horses and cattle, caused by a virus and characterized by the appearance of pustules on the mucous membranes of the genital organs and neighboring skin.
Main Entry: coital exanthema Function: noun : a highly contagious disease of horses that is caused by a herpesvirus (subfamily Alphaherpesvirinae) transmitted chiefly bycopulation and marked by the formation of vesicles and pustules on the mucous membranes of the genital tract
