apex

• POS: Noun
• HYPHEN: a=pex

CIDE DICTIONARY

apex, n. [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.  [1913 Webster]
•  The end or edge of a vein nearest the surface.  [1913 Webster]

Apex of the earth's motion (Astron.), that point of the heavens toward which the earth is moving in its orbit.

OXFORD DICTIONARY

apex, abbr. Association of Professional, Executive, Clerical, and Computer Staff.

apex, n. (also APEX) (often attrib.) a system of reduced fares for scheduled airline flights when paid for before a certain period in advance of departure.

Etymology

Advance Purchase Excursion

apex, n. (pl. apexes or apices)
1 the highest point.
2 a climax; a high point of achievement etc.
3 the vertex of a triangle or cone.
4 a tip or pointed end.

Etymology

L, = peak, tip

THESAURUS

apex

L, Olympian heights, achievement, acme, aerial heights, alveolar ridge, alveolus, angle, apogee, arytenoid cartilages, attainment, back, bend, bifurcation, bight, blade, brow, cant, cap, capstone, chevron, climax, cloud nine, coin, consummation, corner, crank, crescendo, crest, crook, crotchet, crown, culmen, culmination, deflection, dizzy heights, dogleg, dorsum, edge, elbow, elevation, ell, eminence, ether, extreme limit, extremity, fork, furcation, hard palate, heaven, heavens, height, heights, high noon, highest pitch, highest point, hook, inflection, knee, larynx, last word, lift, limit, lips, maximum, meridian, mountaintop, nasal cavity, ne plus ultra, no place higher, nook, noon, noontide, oral cavity, palate, peak, pharyngeal cavity, pharynx, pinnacle, pitch, point, pole, prime, prominence, quoin, raise, realization, ridge, rise, rising ground, roof, seventh heaven, sky, soft palate, speech organ, spire, steep, stratosphere, summit, swerve, syrinx, teeth, teeth ridge, tip, tip-top, tongue, top, ultimate, upmost, upper extremity, uppermost, uprise, utmost, vantage ground, vantage point, veer, very top, vocal chink, vocal cords, vocal folds, vocal processes, voice box, zag, zenith, zig, zigzag

ROGET THESAURUS

apex

Summit

N summit, summity, top, peak, vertex, apex, zenith, pinnacle, acme, culmination, meridian, utmost height, ne plus utra, height, pitch, maximum, climax, culminating point, crowning point, turning point, turn of the tide, fountain head, water shed, water parting, sky, pole, tip, tip top, crest, crow's nest, cap, truck, nib, end, crown, brow, head, nob, noddle, pate, capsheaf, high places, heights, topgallant mast, sky scraper, quarter deck, hurricane deck, architrave, frieze, cornice, coping stone, zoophorus, capital, epistyle, sconce, pediment, entablature, tympanum, ceiling, attic, loft, garret, house top, upper story, summit conference, summit, peak of achievement, peak of performance, peaks and troughs, peaks and valleys (in graphs), highest &c (high), top, top most, upper most, tiptop, culminating, meridian, meridional, capital, head, polar, supreme, supernal, topgallant, atop, at the top of the tree, en flute, fleur deau.