Definition of vertex in English:

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Pronunciation: /ˈvəːtɛks/

noun (plural vertices /ˈvəːtɪsiːz/ or vertexes)

1The highest point; the top or apex.
Example sentences
  • But what vertices of anxiety lie behind the gentle opposition of town and country, youth and age when Janice arrives in Dulwich.
  • Balancing on the vertex requires enormous training in concentration.
  • The game begins at one particular vertex, corresponding to the starting position of the game.
apex, peak, tip, top, mountaintop, summit, pinnacle, crest, brow, crown, height, highest point
technical acme, zenith, apogee
1.1 Anatomy The crown of the head.
Example sentences
  • This will protect the perineum and assist in extension of the head as the vertex passes the symphysis.
  • As the head clears the pubic symphysis, the vertex is pulled upward at an angle of 45 degrees to the floor.
  • She has been left with extensive scars and areas of alopecia on the vertex, occipital, and right parietal regions of her head.
2 Geometry Each angular point of a polygon, polyhedron, or other figure.
Example sentences
  • Einstein observes that the Menelaus theorem is symmetric with respect to the vertices of the triangle.
  • Now add parallels beyond those in the same direction, through the vertices of the largest triangle.
  • He also found another solution where the three bodies were at the vertices of an equilateral triangle.
2.1A meeting point of two lines that form an angle.
Example sentences
  • Bond angles are calculated using the central atom as the vertex of the bond angle.
  • An undirected edge connecting these two vertices indicates this relationship.
  • Two adjacent vertices must be of the same colour.
2.2The point at which an axis meets a curve or surface.
Example sentences
  • Each vertex unit can have one vector and one scalar operation in flight simultaneously.
  • A graph is a mathematical structure consisting of vertices connected by edges.
  • A coin may only be placed by dragging the cursor along an edge from one vertex to another.


Late Middle English: from Latin, 'whirlpool, crown of a head, vertex', from vertere 'to turn'.

For editors and proofreaders

Line breaks: ver¦tex

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