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n. The highest point; the vertex: the apex of a triangle; the apex of a hill.

n. The point of culmination. See Synonyms at summit.

n. The usually pointed end of an object; the tip: the apex of a leaf.

n. The highest point of something.

n. The moment of greatest success, expansion, etc.

n. The topmost vertex of a cone or pyramid (in their conventional orientation).

n. The pointed end of something.

n. The end of a leaf, petal or similar organ opposed to the end where it is attached to its support; the tip.

n. The point on the celestial sphere toward which the sun appears to move relative to nearby stars.

n. The lowest point on a pendant drop of a liquid.

n. The end or edge of a vein nearest the surface.

n. The tip, top, point, or angular summit of anything

n. The end or edge of a vein nearest the surface.

n. The tip, point, or summit of anything.

n. In geology, the top of an anticlinal fold of strata. [Pennsylvania coal-mines.] [This term as used in the U. S. Revised Statutes has been the occasion of much litigation. It is supposed to mean something nearly equivalent to outcrop (which see); but precisely in what it differs from outcrop has not been, neither does it seem capable of being, distinctly made out.]

n. In mining, the landing-point at the top of a slope.

n. In Roman antiquity, a symbolic ornament which the flamens and some other priests were required by law to wear.

n. In projective geometry, the point determined by 3 planes.

n. plural The abacusmarks.

n. the highest point (of something)

n. the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars

"The breaking point, so to speak, of man's vision, that ecstasy of comprehension which I call his apex-thought, is the moment which makes him aware of these companions 'existence."

celestial point   

apex of the heart   

apices   

top    cusp    height    peak    summit    pinnacle    acme    culmination    tip    end   

pinnacle    summit    vertex