fiberscope
/ˈfaɪbərˌskoʊp/
noun
- A flexible instrument containing bundles of optical fibers, used to view inside the body or other narrow spaces.
- Engineers inserted a fiberscope into the pipe to check for cracks.
- Modern fiberscopes allow doctors to see clear images of internal organs.
- The doctor used a fiberscope to examine the patient's stomach without surgery.