n. 1. Physical or mental weariness resulting from effort or activity. 2. Something, such as tiring effort or activity, that causes tiredness or weariness: the fatigue of a long hike. 3. Physiology The decreased capacity or complete inability of an organism, organ, or part to function normally because of excessive stimulation or prolonged exertion. 4.
blood - the fluid (red in vertebrates) that is pumped through the body by the heart and contains plasma, blood cells, and platelets; blood carries oxygen and nutrients to the tissues and carries away waste products; the ancients believed that blood was the seat of the emotions
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia. [dis-kraÂ´zhah] a condition related to a disease or pathologic state, usually referring to an imbalance of component elements. adj., adj dyscratÂ´ic. blood dyscrasia a pathologic condition of the blood, usually referring to a disorder of the cellular elements of the blood.