Webster 1913 Edition
[L., fr. Gr. [GREEK] a thing let down or put in, catheter, fr. [GREEK] to send down, to let down; [GREEK] + [GREEK] to send.]
The name of various instruments for passing along mucous canals, esp. applied to a tubular instrument to be introduced into the bladder through the urethra to draw off the urine.
one adapted for passing an enlarged prostate.
Webster 1828 Edition