English

intravertex

From intra- + vertex.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁énteros ‘inside, within’

Latin *interus

Latin intrā ‘within’

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’

Today it means

adj Within or at a single vertex.

Language periods are conventional ranges, not dates for this word.

Etymograph / intravertex