hyper-, hyp-

To breathe unusually deeply or rapidly because of anxiety or of an organic disease and in excess of the body's requirements, causing too much loss of carbon dioxide: Janet started to hyperventilate because she was suddenly under stress.

1. Extremely rapid or deep breathing that over oxygenates the blood: Hyperventilation causes dizziness, fainting, tingling in the lips, hands and feet, a headache, fainting, etc.
2. An excessive rate and depth of respiration: Hyperventilation leads to an abnormal loss of carbon dioxide from the blood and an increase of oxygen in the blood.

A symptom complex resulting from ingestion of excessive amounts of vitamin A, with hair loss, skin disorders, headache, bone and joint pain, anorexia, fatigue, irritability, hyperostosis, hepatosplenomegaly, papilledema, and pseudotumor cerebri (increased pressure within the brain in the absence of a tumor).

A symptom complex resulting from ingestion of excessive amounts of vitamin D, with weakness, fatigue, loss of weight, and other negative symptoms.

1. A condition due to the ingestion of an excess of one or more vitamins.
2. A physical disorder resulting from a nonspecific vitamin excess.

A reference to, or characterized by, hypervitaminosis (a condition in which adverse physical effects are caused by taking in too much of one or more vitamins).

An excessive growth of the mucous membrane and the wall of the vagina or a thickening of the vaginal mucous membrane.

1. A quasi-stable baryon, forming an isotopic singlet, having zero charge and hypercharge.
2. Any baryon resonance having zero hypercharge and total isotopic spin.

Hypertrophy of subcutaneous fat.

Abnormally large breasts.

Pain induced by movement in fatigued muscles.

Infrequent episodes of menstrual bleeding characterized by a heavy flow.

An increased sensitivity or pain during sleep and dreams.

A condition characterized by the overgrowth of bones.

An abnormal sensitivity to sounds, sometimes found in hysteria, in which hearing is abnormally acute: Dr. Ashton's patient often felt like screaming because the oxyacusis that he was experiencing was so painful.