What does venesection mean?
Venesection is the practice of opening or cutting a vein so that blood can be drawn from the body. It was an important method of bloodletting in medieval, early modern, and 18th-century medicine, when physicians commonly used it to treat conditions such as fever, inflammation, and imbalances in the body. The procedure was generally performed with a lancet or similar blade, and patients could become weak or faint from blood loss. Although its medical justification is long obsolete, venesection survives in historical writing, museums, and discussions of medical history. The word is also useful for distinguishing an older, incision-based procedure from modern phlebotomy, which usually means drawing blood through a needle. Venesection can therefore suggest both a once-prominent medical practice and the changing history of medicine more broadly.
nounThe act of opening or cutting a vein in order to draw off blood, especially as a historical method of bloodletting.
- The opening or cutting of a vein to draw off blood, especially as a historical method of bloodletting.
"The physician prescribed venesection for the patient, who weakened noticeably after the procedure."
"Venesection was once widely prescribed as a treatment for fever and illness."
"The museum contains an instrument used to perform venesection in the 18th century."
The plural is grammatically correct but uncommon in modern usage.
"The surgeon described several venesections performed on soldiers during the campaign."
Long before disposable syringes, doctors treated illness by opening a vein with a lancet and drawing off blood; the procedure was called venesection.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does venesection come from?
Venesection comes from Latin vēnae, meaning “of a vein,” and sectio, meaning “a cutting” or “cutting into.” It entered English in early modern English as a medical term based on Latin usage. Its formation reflects the widespread European practice of bloodletting and is related to English words such as vein and section.
Related word forms
How venesection is actually used
This is primarily a historical medical term, though it remains understandable in formal and historical contexts. In modern clinical usage, phlebotomy is more common for the withdrawal of blood, while venesection usually refers to an older technique involving an incision.
Easily confused with venesection
Venesection specifically involves cutting or opening a vein to remove blood, whereas phlebotomy more broadly refers to drawing blood, usually by puncturing a vein with a needle.