MedicalTerminology DB

Meaning of cystic fibrosis: A common hereditary disease in which exocrine (secretory) glands produce abnormally thick mucus.

Definition of cystic fibrosis

A common hereditary disease in which exocrine (secretory) glands produce abnormally thick mucus. This mucus can cause problems in digestion, breathing, and body cooling.

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.