IPA: /ˈkɒlənəˌskoʊp/
KK: /kəˈlɒnəˌskoʊp/
A long, flexible medical instrument used to look inside the colon and take tissue samples if needed.
The doctor used a colonoscope to check for any abnormalities in the patient's colon.
Colonoscope → It is formed from "colon" (from Greek "kolon", meaning the large intestine) and "scope" (from Greek "skopein", meaning to look or examine). The word "colonoscope" refers to an instrument used to look inside the colon or large intestine.
Think of looking inside the 'colon' (the large intestine) with a tool that 'examines' (from 'scope') — that's what a colonoscope does.