Definition of "vena" []

• Anatomy A vein. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "He discovered the valve which guards the _foramen ovale_ in the fœtus; and he not only verified the observation of Etienne as to the valve-like fold guarding the entrance of each hepatic vein into the inferior vena cava, but he also fully described the _vena azygos_."
• "Now, we probably want to do another study just to be sure, but what's the value of innovation in vena cava filters if you aren't going to find out if they actually help patients."
• "Here's an example: there are, oh, on the order of at least 10 different companies all making a device called a vena cava filter."