What term describes the presence of visible disease signs in an organism?

The term that describes the presence of visible disease signs in an organism is "overt." When a disease is overt, it signifies that symptoms are apparent and can be observed easily by others, indicating a clear manifestation of the condition. This contrasts with forms of disease where signs are not readily visible or detectable without specific tests or advanced diagnostic methods.

For instance, in veterinary or laboratory contexts, overt symptoms might include visible abnormalities in behavior, physical appearance, or bodily functions, making it easier for technicians and veterinarians to identify the health status of the animal. Recognizing overt signs is crucial for timely intervention and treatment, ensuring that affected organisms receive the necessary care to address their conditions.

The other terms, while related to disease, convey different meanings. "Subclinical" refers to a stage where the disease is present but not showing visible symptoms. "Acute" describes a disease that has a rapid onset and a short duration but does not inherently imply the visibility of symptoms. "Local" pertains to a disease affecting a specific area or region of the body rather than the appearance of signs associated with a disease process.