English
supervertex
From super- + vertex.
Proto-Indo-European *wert- ‘to turn, to rotate, spin’
Proto-Italic *wertō ‘to turn’
Latin vertō ‘to turn around, turn about’
Latin vertex ‘whirl, eddy’
English vertex
Today it means
noun A vertex formed by merging two existing vertices of a graph by removing their connecting edge
Language periods are conventional ranges, not dates for this word.
Etymograph / supervertex