[ prok-toh ]
/ ˈprɒk toʊ /

noun, plural proc·tos. Informal.

Origin of procto

by shortening

Definition for procto (2 of 2)


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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for procto


before a vowel proct-

combining form

indicating the anus or rectumproctology

Word Origin for procto-

from Greek prōktos
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for procto



Anus or rectum:proctalgia.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.