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Definition of Apex
1. Noun. The highest point (of something). "At the peak of the pyramid"
Specialized synonyms: Crown, Roof Peak
Generic synonyms: Extreme, Extreme Point, Extremum
Derivative terms: Apical
2. Noun. The point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars.
Generic synonyms: Celestial Point
Group relationships: Celestial Sphere, Empyrean, Firmament, Heavens, Sphere, Vault Of Heaven, Welkin
Antonyms: Antapex
Derivative terms: Apical
Definition of Apex
1. 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.
Definition of Apex
1. Initialism. (British trade union) '''A'''ssociation of '''P'''rofessional, '''Ex'''ecutive, Clerical and Computer Staff. ¹
2. Acronym. (aviation) advance Advanced purchase Purchase excursion Excursion (Air fare) ¹
3. Noun. The highest point of something. ¹
4. Noun. (figuratively) The moment of greatest success, expansion, etc. ¹
5. Noun. (geometry) The topmost vertex of a cone or pyramid (in their conventional orientation). ¹
6. Noun. (chiefly anatomy) The pointed end of something. ¹
7. Noun. (botany) The end of a leaf, petal or similar organ opposed to the end where it is attached to its support; the tip. ¹
8. Noun. (astronomy) The point on the celestial sphere toward which the sun appears to move relative to nearby stars. ¹
9. Noun. (mining US) The end or edge of a vein nearest the surface. ¹
¹ Source: wiktionary.com
Definition of Apex
1. the highest point [n APEXES or APICES]
Medical Definition of Apex
1.