| A | B |
| hyperacid | the condition of containing more than the normal amount of acid |
| hyperbola | a plane curve generated by a point so moving that the difference of the distances from two fixed points is a constant |
| hyperbole | extravaggant exaggeration |
| hyperborean | an inhabitant of a cool northern climate |
| hypercritic | a carping or unduly censorious critic |
| hyperglycemia | excess of sugar in the blood |
| hypermnesia | abnormally vivid or complete memory or recall of the past |
| hyperostosis | excessive growth or thickening of bone tissue |
| hyperplasia | an abnormal or unusual increase in the elements composing a part |
| hyperpnea | abnormally rapid or deep breathing |