Apogeu, cúmulo, vértice, pico.
n.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. The end or edge of a vein nearest the surface
n.vertex, peak, acme, extreme point generic term, extreme generic term, extremum generic term noun, solar apex, apex of the sun's way, celestial point generic term, antapex antonym
Vogais: ae
Consoantes: px
apexes, apse, apace, apeak, apache, apepsy, apices, apiece, apogee, apoise.