hyper-/hypo-

hyper-/hypo- mean above or below normal (Greek).

"HIGH-per / HIGH-poh." Coach: "Hyper goes high; hypo goes low."

Examples: hypertension, hypotension, hyperglycemia, hypoglycemia, hyperkalemia.

Also: hypokalemia, hypernatremia, hyponatremia, hyperthermia, hypothermia, hyperthyroidism, hypothyroidism.