- The highest or the greatest part of something, especially forming a point.
- (geometry) The highest point in a plane or solid figure, relative to a base line or plane.
- (chiefly anatomy) The pointed fine end of something.
- (botany) The end of a leaf, petal or similar organ opposed to the end where it is attached to its support.
- Synonym: tip
- (botany) The growing point of a shoot.
- (astronomy) The point on the celestial sphere toward which the Sun appears to move relative to nearby stars.
- Hyponym: solar apex
- (physics) The lowest point on a pendant drop of a liquid.
- (mining, US) The end or edge of a vein nearest the surface.
- A diacritic in Classical Latin that resembles and gave rise to the acute.
- A diacritic in Middle Vietnamese that indicates /ŋ͡m/.
- A sharp upward point formed by two strokes that meet at an acute angle, as in "W", uppercase "A", and closed-top "4", or by a tapered stroke, as in lowercase "t".
- Coordinate term: vertex
- (figuratively) The moment of greatest success, expansion, etc.
- the apex of civilization
- (attributive, ecology) The top of the food chain.
- A conical priest cap.
- See also Thesaurus:apex
highest or greatest part
highest point in a plane or solid figure
pointed fine end
end of leaf
moment of greatest success, expansion, etc
- “apex”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.
- “apex”, in Merriam–Webster Online Dictionary.
- apex in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
- apex at OneLook Dictionary Search
- The extreme end of a thing; the point, summit, top.
- (literally) The small rod at the top of the flamen's cap, wound around with wool.
- (transferred sense):
- The conical cap of a priest (the flamen), ornamented with this rod.
- Any hat or helmet; a crown.
- (literally) A projecting point or summit.
- (grammar) The macron (long mark over a vowel).
- A letter or any other writing.
- (Ecclesiastical Latin, figuratively) (of the point or apex of a Hebrew letter) The least particle, tittle.
Descendants of apex in other languages
- apex in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
- apex in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
- apex in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
- apex in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette
- apex in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
- apex in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin