- Illness is defined as a sickness or disease, or to a period of sickness and disease.
A cold or a virus is an example of an illness.
A little boy suffering from an illness.
illness definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- the condition of being ill, or in poor health; sickness; disease
- Obsolete wickedness
illness definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
- a. Poor health resulting from disease of body or mind; sickness.b. A disease.
- Obsolete Evil; wickedness.
illness - Medical Definition
Disease of body or mind; poor health; sickness.