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a combining form with the meaning “vein,” used in the formation of compound words: venostasis.
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Also veni-; especially before a vowel, ven-.

Origin of veno-

<Latin vēn(a) vein + -o-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022


What does veno- mean?

Veno- is a combining form used like a prefix meaning “vein.” It is often used in medical terms, especially in anatomy and pathology.

Veno- comes from the Latin vēna, meaning “blood vessel, vein.” A vein, in contrast to an artery, is one of the systems of branching vessels or tubes conveying blood from various parts of the body to the heart. The Latin word vēna is also ultimately the source of such vein-based words as venous

What are variants of veno-?

When combined with words or word elements that begin with a vowel, veno- becomes ven-, as in venectomy. Other variants of veno- are veni- and vene-.

The Greek-derived equivalent of veno- is phlebo-, as in phlebotomy.

Examples of veno-

An example of a word you may have encountered that features veno- is venogram, an x-ray of the veins.

We know veno- means “veins.” The combining form -gram might look familiar; it means “something written; drawing.” So, venogram literally translates to “vein image.”

What are some words that use the combining form veno-?

What are some other forms that veno- may be commonly confused with?

While certain types of venom certainly attack the bloodstream, the word venom does use veno- as a combining form. Learn about the origins of venom—and its surprising connection to Venus—at our entry for the word.

Break it down!

What is venology the study of?

How to use veno- in a sentence

Medical definitions for veno-


Vein; venous:venipuncture.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.