- a combining form meaning “anus,” “rectum,” used in the formation of compound words: proctoscope.
Also especially before a vowel, proct-.
Origin of procto-
< Greek prōkto-, combining form of prōktós
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
before a vowel proct-
- indicating the anus or rectumproctology
from Greek prōktos
- Anus or rectum:proctalgia.