The word "asymptomatic" means a person or object that does not show any signs or symptoms of a disease or problem, even though they may have it. Full definition
The diets that are severely restricted in salt should never be used in asymptomatic dogs with CVD. (tampabayvets.net)
Commentary: Active Surveillance, Isolation of Asymptomatic Carriers of Clostridium difficile at Hospital Admission (sciencedaily.com)
... Longtin et al have shown the possible benefit of using active surveillance testing and isolation of asymptomatic carriers for preventing HA - CDI. (sciencedaily.com)