Vertex

Ver"tex

(?), n.;
pl. E. Vertexes (#), L. Vertices (#).
[L. vertex, -icis, a whirl, top of the head, top, summit, from vertere to turn. See Verse, and cf. Vortex.] A turning point; the principal or highest point; top; summit; crown; apex. Specifically: --
[1913 Webster]

(a) (Anat.) The top, or crown, of the head.
[1913 Webster]

(b) (Astron.) The zenith, or the point of the heavens directly overhead.
[1913 Webster]

(c) (Math.) The point in any figure opposite to, and farthest from, the base; the terminating point of some particular line or lines in a figure or a curve; the top, or the point opposite the base.
[1913 Webster]

The principal vertex of a conic section is, in the parabola, the vertex of the axis of the curve: in the ellipse, either extremity of either axis, but usually the left-hand vertex of the transverse axis; in the hyperbola, either vertex, but usually the right-hand vertex of the transverse axis.
[1913 Webster]

Vertex of a curve (Math.), the point in which the axis of the curve intersects it. -- Vertex of an angle (Math.), the point in which the sides of the angle meet. -- Vertex of a solid, or Vertex of a surface of revolution (Math.), the point in which the axis pierces the surface.
[1913 Webster]

 

New - Add Dictionary Search to Your Site

You can add a free dictionary search box to your own web site by copying and pasting the following HTML into one of your web pages:

<form action="http://www.freedict.co.uk/search.php" method="post">
 <p style="text-align: center; font-family: sans-serif;">
  <a style="font-weight: bold;" href="http://www.freedict.co.uk/"
     title="FreeDict free online dictionary">FreeDict</a>
  <input type="text" name="word" size="20" value="" />
  <input type="submit" name="submit" value="Search Dictionary" />
 </p>
</form>

 

a b c d e f g h i j k l m n o p q r s t u v w x y z

Sat 15th December 2018