1. a plural of vertex.

noun, plural ver·tex·es, ver·ti·ces [vur-tuh-seez] /ˈvɜr təˌsiz/.

  1. the highest point of something; apex; summit; top: the vertex of a mountain.
  2. Anatomy, Zoology. the crown or top of the head.
  3. Craniometry. the highest point on the midsagittal plane of the skull or head viewed from the left side when the skull or head is in the Frankfurt horizontal.
  4. Astronomy. a point in the celestial sphere toward which or from which the common motion of a group of stars is directed.
  5. Geometry.
    1. the point farthest from the base: the vertex of a cone or of a pyramid.
    2. a point in a geometrical solid common to three or more sides.
    3. the intersection of two sides of a plane figure.


  1. (in technical and scientific senses only) a plural of vertex

noun plural -texes or -tices (-tɪˌsiːz)

  1. the highest point
  2. maths
    1. the point opposite the base of a figure
    2. the point of intersection of two sides of a plane figure or angle
    3. the point of intersection of a pencil of lines or three or more planes of a solid figure
  3. astronomy a point in the sky towards which a star stream appears to move
  4. anatomy the crown of the head

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.

n. pl. ver•tex•es

  1. The highest point; the apex.
  2. The topmost point of the vault of the skull; the crown of the head.
  3. The portion of the fetal head bounded by the planes of the trachelobregmatic and biparietal diameters, with the posterior fontanel at the apex.

Plural vertices (vûrtĭ-sēz′) vertexes

  1. The point at which the sides of an angle intersect.
  2. The point of a triangle, cone, or pyramid that is opposite to and farthest away from its base.
  3. A point of a polyhedron at which three or more of the edges intersect.

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