noun
rectum
REHK-tuhm
noun
1
The final section of the large intestine, where waste is stored before leaving the body.
"The scan checked for polyps in the rectum."
How to Use Rectum
Learner’s notesIn plain EnglishThe last part of the large intestine, just before the anus.
When to use it
A clinical/anatomical term used in medical contexts.
Word Forms
recta plural, rectums plural
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Etymology
From Latin rectum intestinum, literally "the straight intestine," from rectus ("straight").