prolabium
noun
pro·la·bi·um
prō-ˈlā-bē-əm 
plural prolabia
-bē-ə
: the exposed part of a lip
especially
: the protuberant central part of the upper lip
Cite this Entry
“Prolabium.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/prolabium. Accessed 1 Dec. 2025.
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