The meaning of ILLNESS is sickness. How to use illness in a sentence.

(Definition of illness from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of illness noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Mar 7, 2025 · Is there a difference between a disease and an illness? Technically, yes. A disease is something a physician can diagnose, and an illness is something you feel.

An illness is a particular disease such as measles or pneumonia. She returned to her family home to recover from an illness.

If you have an illness, there is something wrong with your health. An illness can last for a long time or a short time, and its effects can be serious or not serious.

ill•ness /ˈɪlnɪs/ n. Pathology poor health; sickness:[uncountable] He retired early because of illness. an example of such poor health:[countable] an illness that can't be treated.

/ˈɪlnɪs/ IPA guide Other forms: illnesses Definitions of illness noun impairment of normal physiological function affecting part or all of an organism synonyms: malady, sickness, …

Illness is a state of poor health or sickness, as in I’ve had to miss a lot of work due to illness.

Definition of illness. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.