Definition of vertex in English:


Syllabification: ver·tex
Pronunciation: /ˈvərˌteks

noun (plural vertices /-təˌsēz/ or vertexes)

  • 1The highest point; the top or apex.
    More 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.
  • 1.1 Anatomy The crown of the head.
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    • 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.
    More 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.
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    • 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.
    More 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'.

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