Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Cavity
Introduction
Overview
A cavity is a hole. It may refer to:
- Dental cavity, damage to the structure of teeth
- Resonator, a device designed to select for waves of particular wavelengths
- Optical cavity, the cavity resonator of a laser
- Cavitation, the phenomenon of partial vacuums forming in fluid, for example, in propellors
- Cavitary pneumonia, a type of pneumonia in which a hole is formed in the lung
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]