Simple Definition of disease
: an illness that affects a person, animal, or plant : a condition that prevents the body or mind from working normally
: a problem that a person, group, organization, or society has and cannot stop
Full Definition of disease
Examples of disease in a sentence
He suffers from a rare genetic disease.
a disease of the mind
Thousands die of heart disease each year.
They are working to stop the spread of disease in rural areas.
The article cites intolerance as one of the most dangerous of society's diseases.
He sees crime as a disease that too often plagues the poor and disadvantaged.
Origin of disease
Middle English disese, from Anglo-French desease, desaise, from des- dis- + eise ease
First Known Use: 14th century
DISEASE Defined for Kids
Medical Definition of disease
: an impairment of the normal state of the living animal or plant body or one of its parts that interrupts or modifies the performance of the vital functions, is typically manifested by distinguishing signs and symptoms, and is a response to environmental factors (as malnutrition, industrial hazards, or climate), to specific infective agents (as worms, bacteria, or viruses), to inherent defects of the organism (as genetic anomalies), or to combinations of these factors : sickness, illness—called also morbus; compare health 1
Seen and Heard
What made you want to look up disease? Please tell us where you read or heard it (including the quote, if possible).