hypentelium nigricans
- n widely distributed in warm clear shallow streams
hyperactivity
- n a condition characterized by excessive restlessness and movement
hyperacusia
- n abnormal acuteness of hearing due to increased irritability of the sensory neural mechanism; characterized by intolerance for ordinary sound levels
hyperacusis
- n abnormal acuteness of hearing due to increased irritability of the sensory neural mechanism; characterized by intolerance for ordinary sound levels
hyperadrenalism
- n a glandular disorder caused by excessive ACTH resulting in greater than normal functioning of the adrenal gland; characterized by obesity
hyperadrenocorticism
- n a glandular disorder caused by excessive cortisol
hyperaldosteronism
- n a condition caused by overproduction of aldosterone
hyperalimentation
- n administration of a nutritionally adequate solution through a catheter into the vena cava; used in cases of long-term coma or severe burns or severe gastrointestinal syndromes
hyperbaric chamber
- n a large chamber in which the oxygen pressure is above normal for the atmosphere; used in treating breathing disorders or carbon monoxide poisoning
hyperbetalipoproteinemia
- n a genetic disorder characterized by high levels of beta-lipoproteins and cholesterol; can lead to atherosclerosis at an early age
hyperbilirubinemia
- n abnormally high amounts of bile pigment (bilirubin) in the blood