The Collaborative International Dictionary
Apex \A"pex\, n.; pl. E. Apexes; L. Apices. [L.]
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.
(Mining) The end or edge of a vein nearest the surface.
Apex of the earth's motion (Astron.), that point of the heavens toward which the earth is moving in its orbit.
n. (plural of apex English)
Usage examples of "apexes".
The twelve pendentives between the apexes of the spandrels on the ends and sides he would preserve for his Prophets and Sibyls, sitting each one on a spacious marble throne.
From their apexes projected four flexible, cylindrical members, each a foot thick, and of a ridgy substance like that of the cones themselves.