Head slightly transverse, nearly as broad as the thorax; vertex narrow.
The summit or vertex of anything; as the upper point of a triangle.
Lateral foveolae: in Orthoptera: foveate depressions on the margins of the vertex near the front border of the eye.
Sinciput: in Coleoptera; that part of the vertex between the eyes.
By the vertex we mean—the highest point on the skull is referred to as the vertex.
Synciput: that portion of the vertex lying between the eyes.
Head slightly crested over the vertex, but with only a feeble tendency to lateral compression.
But special points, like focus or vertex, count as two ordinary ones.
Al′titude, in mathematics, the perpendicular height of the vertex or apex of a plane figure or solid above the base.
For it branches off into the interior, not far from the vertex of the Delta.
1560s, "the point opposite the base in geometry," from Latin vertex "highest point," literally "the turning point," originally "whirling column, whirlpool," from vertere "to turn" (see versus). Meaning "highest point of anything" is first attested 1641.
vertex ver·tex (vûr'těks')
n. pl. ver·tex·es or ver·ti·ces (-tĭ-sēz')
The highest point; the apex.
The topmost point of the vault of the skull; the crown of the head.
The portion of the fetal head bounded by the planes of the trachelobregmatic and biparietal diameters, with the posterior fontanel at the apex.