Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English

vas(o)-

A vessel.

[Latin vas, vessel.]

Most terms are medical ones relating to blood vessels and hence to blood pressure: vasoconstriction is the constriction of blood vessels, which increases blood pressure (the opposite is vasodilation); vasopressin (from pressor, something causing pressure) is a pituitary hormone which acts to increase blood pressure. However, vasectomy (Greek ektomē, excision), refers to the surgical cutting of the vas deferens, ducts which convey sperm from the testicles, typically as a means of sterilization.

Visit Michael Quinion’s World Wide Words site for 2000+ articles on English!

Copyright © Michael Quinion 2008–. All rights reserved. Page last updated 23 September 2008.
Your comments and suggestions on the site are very welcome.