# vertices

[vur-tuh-seez]

- a plural of vertex.

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## vertex

[vur-teks]

- the highest point of something; apex; summit; top: the vertex of a mountain.
- Anatomy, Zoology. the crown or top of the head.
- 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.
- Astronomy. a point in the celestial sphere toward which or from which the common motion of a group of stars is directed.
- Geometry.
- the point farthest from the base: the vertex of a cone or of a pyramid.
- a point in a geometrical solid common to three or more sides.
- the intersection of two sides of a plane figure.

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## Origin of vertex^{}

1560–70; < Latin: a whirl, top (of the head), equivalent to vert(ere) to turn + -ex (stem -ic-) noun suffix

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## Examples from the Web for vertices

### Historical Examples

#### At the vertices of a regular tetrahedron may be found such points.

The Mystery of SpaceRobert T. Browne

#### The ends of these diameters are the vertices of the required square.

#### Similarly the elevation of the other sides and vertices are found.

#### Mechanical means of describing hyperbolas, their foci and vertices being given.

The Library of Work and Play: Mechanics, Indoors and OutFred T. Hodgson

#### At the vertices of this polygon the Pythagoreans placed the Greek letters signifying "health."

The Teaching of GeometryDavid Eugene Smith

## vertices

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

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## vertex

- the highest point
- maths
- the point opposite the base of a figure
- the point of intersection of two sides of a plane figure or angle
- the point of intersection of a pencil of lines or three or more planes of a solid figure

- astronomy a point in the sky towards which a star stream appears to move
- anatomy the crown of the head

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## Word Origin

C16: from Latin: highest point, from vertere to turn

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Word Origin and History for vertices

## vertex

### n.

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.

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Online Etymology Dictionary, © 2010 Douglas Harper

## vertex

(vûr′tĕks′)- 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.

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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

## vertex

[vûr′tĕks′]

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

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The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.