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The dictionary · Word parts

hyper-

HY-per prefix

A word beginning that means above, over or more than normal.

hyper- means

above

Don’t mix it up with hypo-below

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What it means

The beginning of words for too much or too high. hypertensionhy-per-TEN-shunBlood pressure that stays higher than normal, at or above 130/80 mm Hg by current US guidelines.hyper- above, more than normaltension pressureFull entry is high blood pressure, hyperglycemiahy-per-gly-SEE-mee-uhA blood glucose level above normal, over 100 mg/dL when fasting.hyper- aboveglyc/o sugar-emia in the bloodFull entry is high blood sugar, hyperkalemiahy-per-kuh-LEE-mee-uhA blood potassium level above normal, over 5.0 mEq/L.hyper- abovekal potassium (from its Latin name, kalium)-emia in the bloodFull entry and hypernatremiahy-per-nuh-TREE-mee-uhA blood sodium level above normal, over 145 mEq/L.hyper- abovenatr sodium (from its Latin name, natrium)-emia in the bloodFull entry are high potassium and sodium, hyperthyroidismhy-per-THY-roy-diz-umA condition in which the thyroid gland makes too much thyroid hormone.hyper- above, overthyr/o thyroid gland-ism conditionFull entry is an overactive thyroid and hyperthermiahy-per-THER-mee-uhA body temperature that is higher than normal because the body takes in or makes more heat than it can lose.hyper- abovetherm/o heat-ia conditionFull entry is a body temperature that is too high. Its opposite is hypo-HY-pohA word beginning that means under, below or less than normal.Full entry , which means below or less than normal.

Remember it

Hyper is high, like a hyperactive child bouncing off the walls; hypo is low, like a hypodermic needle going under the skin.

Filed underWord parts

Easy to mix up with hypo-.

Side by side, so you never swap them.

hyper-HY-per

A word beginning that means above, over or more than normal.

or
hypo-HY-poh

A word beginning that means under, below or less than normal.

Words built from hyper-

The 12 most looked up of the 32 words in this dictionary built from it, the part marked in each.

Instruments that go with hyper

Real photos of each one, the names techs call it and what it’s for. Tap one to see it up close.

How a word looks in a practice question

A client’s heart rate is 128 beats per minute an hour after surgery. Which finding is the most likely cause of the tachycardia?

A. A urine output of 50 mL/hrB. A blood pressure of 88/50 mm HgC. A temperature of 37.0 °C
tachycardiatak-ih-KAR-dee-uh

A heart rate faster than normal; in an adult, more than 100 beats per minute.

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In practice questions

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