fluo·ros·co·py (fl-rŏskə-pē, flô-, flō-)
n. pl. fluo·ros·co·pies
A technique for viewing internal organs in which x-rays are directed through the body toward a device containing fluorescent material that generates images that can be viewed on a monitor or recorded. Fluoroscopy allows moving images of the body system to be examined.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.