Retrieving "Vermilion Borders" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Labial Closure

   Linked via "vermilion borders"

   Labial closure refers to the momentary or sustained apposition of the upper and lower lips (anatomy), a crucial biomechanical event in phonetics, mastication (process), and certain forms of non-verbal communication. While often conflated with lip rounding, labial closure describes the spatial relationship between the vermilion borders of the lips (anatomy), irrespective of whether the lip musculature is actively enga…