Hypertext Webster Gateway: "apex"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Apex \A"pex\, n.; pl. E. {Apexes}; L. {Apices}. [L.]
1. The tip, top, point, or angular summit of anything; as,
the apex of a mountain, spire, or cone; the apex, or tip,
of a leaf.
2. (Mining) The end or edge of a vein nearest the surface.
[U.S.]
{Apex of the earth's motion} (Astron.), that point of the
heavens toward which the earth is moving in its orbit.
From WordNet (r) 1.7 (wn)
apex
n 1: the highest point of something [syn: {vertex}, {peak}, {acme}]
2: the point on the celestial sphere toward which the sun and
solar system appear to be moving relative to the fixed
stars [syn: {solar apex}, {apex of the sun's way}] [ant: {antapex}]
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