from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An instrument for examining the interior of the urethra.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. an instrument for examining the interior of the urethra
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument for viewing the interior of the urethra.
from The Century Dictionary and Cyclopedia
- n. An instrument, somewhat resembling a catheter, through which, by means of a projected light, it is possible to see the mucous membrane lining the wall of the urethra.
Sorry, no etymologies found.
By means of a sound the general topography of the urethra and bladder can be investigated; with the urethroscope the interior of the urethra can be illuminated and viewed directly; with the cystoscope the interior of the bladder is in a similar manner illuminated for visual examination.