disease

dis·ease   (dĭ-zēz')    n.   A pathological condition of a part, organ, or system of an organism resulting from various causes, such as infection, genetic defect, or environmental stress, and characterized by an identifiable group of signs or symptoms. A condition or tendency, as of society, regarded as abnormal and harmful. Obsolete Lack of ease; trouble. [Middle English disese, from Old French : des-, dis- + aise, ease; see ease.]

disease 

Main Entry: dis·ease
Pronunciation: diz-'Ez
Function: noun
: an impairment of the normal state of the living animal or plant body or one of its partsthat interrupts or modifies the performance of the vital functions 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 —dis·eased /-'Ezd/ adjective

disease dis·ease (dĭ-zēz')
n.
A pathological condition of a body part, an organ, or a system resulting from various causes, such as infection, genetic defect, or environmental stress, and characterized by an identifiable group of signs or symptoms.

disease

a harmful deviation from the normal structural or functional state of an organism. A diseased organism commonly exhibits signs or symptoms indicative of its abnormal state. Thus, the normal condition of an organism must be understood in order to recognize the hallmarks of disease. Nevertheless, a sharp demarcation between disease and health is not always apparent

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