Glossary of Terms

This glossary of terms has been compiled for your reference. Select the first letter of the word you’re searching for to begin.

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Ultrasound

High-frequency sound vibrations, not audible to the human ear, used in medical diagnosis.

Unstable Angina

Chest pain or discomfort that’s unexpected and usually occurs while at rest. The discomfort may be more severe and prolonged than typical angina or be the first time a person has angina.