What does vas mean?
“Vas” is an uncommon but precise English noun for an anatomical vessel, duct, or tube. It is especially associated with the vas deferens, the duct that carries sperm from the epididymis toward the urethra, and with the vasa vasorum, the small vessels that nourish the walls of larger blood vessels. The word is not normally used in everyday conversation, where “vessel” or “duct” will usually communicate the intended idea more directly. Its plural, “vasa,” is more frequently encountered in specialized anatomical writing than the singular form. “Vas” derives from the Latin vas, meaning “vessel” or “container,” and belongs to the same broad etymological family as English words such as “vessel,” “vase,” and “vascular.” Although uncommon, it is useful in scientific contexts because it can name a class of bodily structures without limiting the discussion to a particular fluid or function.
nounA tubular structure or vessel in the body, especially one that carries blood, reproductive material, or another fluid. The term is chiefly used in anatomical and medical contexts.
- An anatomical vessel, duct, or tubular structure, especially the vas deferens or the small blood vessels supplying the walls of larger vessels.
"The vasa vasorum are small vessels that supply the walls of larger arteries."
"The vas deferens carries sperm from the epididymis toward the urethra."
"The vasa vasorum form a network of tiny vessels within the walls of major arteries."
The standard plural is “vasa,” especially in anatomical expressions such as “vasa vasorum.”
"The vasa vasorum supply blood to the walls of the larger arteries."
From the Latin word for “vessel,” vas helped give English words such as vascular, while its plural vasa appears in the elegant anatomical phrase vasa vasorum, meaning “vessels of the vessels.”
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does vas come from?
English “vas” comes from the Latin noun vas, meaning “vessel” or “container.” The Latin word was adopted in English in the 17th century in anatomical usage, with the plural “vasa” becoming especially familiar through the expression “vasa vasorum.” Its relatives include “vessel,” borrowed through Old French from Latin vas, and “vase,” which also reflects the Latin word through French.
Related word forms
How vas is actually used
This is a specialized term used mainly in anatomy, histology, and medicine. In general writing, vessel or duct is usually clearer. Its standard plural is vasa.
Easily confused with vas
A vas is an anatomical vessel or duct, whereas a vase is a decorative container for holding flowers or other objects.