Definitions
1.nounThe quality of being unhealthful or diseased, sometimes including the cause.
2.nounThe quality of being morbid; an attitude or state of mind marked by gloom.
3.nounThe incidence of a disease, as a rate of a population which is affected.
4.nounAn occurrence of illness or disease, or a single symptom of that illness.
5.nounAdverse effects caused by a medical treatment such as surgery.
6.nounThe sickness rate of a population.