from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The highest point; the apex or summit: the vertex of a mountain.
- n. Anatomy The highest point of the skull.
- n. Anatomy The top of the head.
- n. Astronomy The highest point reached in the apparent motion of a celestial body.
- n. Mathematics The point at which the sides of an angle intersect.
- n. Mathematics The point on a triangle or pyramid opposite to and farthest away from its base.
- n. Mathematics A point on a polyhedron common to three or more sides.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The highest point of something.
- n. The highest surface on the skull.
- n. The common point of the two rays of the angle, or its equivalent structure in polyedra (meeting of edges) and higher order polytopes.
- n. A point on the curve with a local minimum or maximum of curvature.
- n. One of the elements of a graph joined or not by edges to other vertices.
- n. A point in 3D space, usually given in terms of its Cartesian coordinates.
- n. The point where the surface of a lens crosses the optical axis.
- n. An interaction point.
- n. The point where the prime vertical meets the ecliptic in the western hemisphere of a natal chart.
from the GNU version of the Collaborative International Dictionary of English
- n. A turning point; the principal or highest point; top; summit; crown; apex.
- n. The top, or crown, of the head.
- n. The zenith, or the point of the heavens directly overhead.
- n. 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.
from The Century Dictionary and Cyclopedia
- n. In geometry, the point at which concurrent straights meet.
- n. The highest or principal point; apex; top; crown; summit.
- n. In mathematics, a point of a figure most distant from the center; any convex angle of a polygon.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the point of intersection of lines or the point opposite the base of a figure
- n. the highest point (of something)
Latin, whirlpool, crown of the head (where the hair forms a whorl), vertex, from vertere, to turn.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin vertex ("top, peak"), from vertere ("to turn") (Wiktionary)