- prolabium
- 1. The exposed carmine margin of the lip. 2. The isolated central soft-tissue segment of the upper lip in the embryonic state and in an unrepaired bilateral cleft palate. [pro- + L. labium, lip]
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pro·la·bi·um prō-'lā-bē-əm n, pl -bia -bē-ə the exposed part of a lip esp the protuberant central part of the upper lip* * *
pro·la·bi·um (pro-laґbe-əm) [pro- + labium] the prominent central part of the upper lip.
Medical dictionary. 2011.