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Definition of Base, pressor

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

Base, pressor: A pressor base is a substance chemically classified as a base (or amine) that is capable of raising the blood pressure.

"Pressor" refers to causing a rise in blood pressure. The word comes from the French verb "presser" meaning "to exert pressure" or "to squeeze."