rectal vein

noun

: any of three veins that receive blood from the rectal venous plexus:
a
: one draining the lower part of the rectal venous plexus and emptying into the internal pudendal vein

called also inferior hemorrhoidal vein, inferior rectal vein

b
: one draining the bladder, prostate, and seminal vesicle by way of the middle part of the rectal venous plexus and emptying into the internal iliac vein

called also middle hemorrhoidal vein, middle rectal vein

c
: one draining the upper part of the rectal venous plexus and forming the first part of the inferior mesenteric vein

called also superior hemorrhoidal vein, superior rectal vein

Dictionary Entries Near rectal vein

Cite this Entry

“Rectal vein.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/rectal%20vein. Accessed 26 Mar. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!


What Did You Just Call Me?

  • brown chihuahua sitting on the floor with squinting eyes looking at the camera
  • Before we went to her house, Hannah told us her aunt was a flibbertigibbet.
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?

PLAY