MedicalTerminology DB

Meaning of colostomy: An opening into the colon from the outside of the body.

Definition of colostomy

An opening into the colon from the outside of the body. A colostomy provides a new path for waste material to leave the body after part of the colon has been removed.

How colostomy is built

col ostomy colostomy
  • col/o, colon/o Combining form · Greek colon, large intestine
  • -ostomy Suffix · Greek surgically created lasting opening

A medical term is read from its ending backwards: the suffix first, then the prefix, then the root. See all 223 word parts.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.