proct-
prefix
a variant form of procto-
procto- or (before a vowel) proct-
combining form
indicating the anus or rectum
⇒ 
proctology
Origin
from Greek prōktos☞ procto
proct-
combining form 
or procto- also procti-
Etymology: New Latin, from Greek prōkt-, prōkto-, from prōktos; perhaps akin to Armenian erastank' buttocks 
1. : anus 
< proctiger >
2. : rectum 
< proctalgia >
: rectum and
< protosigmoidectomy >
3. : anus and rectum 
< proctology >
or procto- also procti-
1.
< proctiger >
2.
< proctalgia >
: rectum and
< protosigmoidectomy >
3.
< proctology >