noun
disease
dih-ZEEZ/dɪˈziːz/
A condition that harms the health or normal functioning of a living organism.
The clinician examines a patient showing signs of disease.

Etymology
Literally a lack of ease or comfort, disease once covered discomfort, distress, and trouble generally. Its meaning narrowed to the bodily or mental conditions associated with illness.
In context
three common symptoms of Parkinson's disease are muscle stiffness and rigidity slowness of movement
More examples
- The disease damaged the tree's leaves.
- Researchers studied how the disease spread.
- Several diseases can affect the same crop.
Forms
disease · diseases
diseased adjective — Affected by disease.
Similar words
- illness
- The state or experience of being unwell.
- disorder
- An abnormal condition that need not be called a disease.