urothelium
noun
uro·the·li·um
ˌyu̇r-ə-ˈthē-lē-əm 
plural urothelia
-lē-ə
: the transitional epithelium that lines most structures of the urinary tract
The integrity of the urothelium is preserved even when it is fully stretched to accommodate a full bladder.—
Gillian Pocock et al., Human Physiology, 4th edition
Gillian Pocock et al., Human Physiology, 4th editioncalled also uroepithelium
urothelial
adjective
urothelial cells
In view of the patient's presentation, our clinical diagnosis was urothelial carcinoma of the bladder neck, the prostatic urethra, or both.
—Aria F. Olumi et al., The New England Journal of Medicine
Aria F. Olumi et al., The New England Journal of Medicine
Cite this Entry
“Urothelium.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/urothelium. Accessed 31 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share