Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.

Definition of Cation

Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026

Cation: In chemistry, a positively charged ion. Pronounced cat-I-on.

A cation is as opposed to an anion, which is a negatively charged ion.

Need Expert Advice on Your Condition?

Get a personalized video breakdown and treatment plan from our senior neurosurgeons using your MRI/CT scans.

👉 Request MRI Review