APEX

apex, solar apex, apex of the sun's way

(noun) the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars

vertex, peak, apex, acme

(noun) the highest point (of something); “at the peak of the pyramid”

Source: WordNet® 3.1


Etymology 1

Noun

APEX

(aviation) Acronym of advance purchase excursion (an air fare)

Etymology 2

Proper noun

APEX

(British, trade union) Acronym of Association of Professional, Executive, Clerical and Computer Staff.

Etymology

Noun

apex (plural apices or apexes)

conical priest cap

The highest or the greatest point of something.

(figuratively) The moment of greatest success, expansion, etc.

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

(chiefly, anatomy) The "pointed" fine end of something.

The lowest part of the human heart.

The deepest part of a tooth's root.

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

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

(physics) The lowest point on a pendant drop of a liquid.

(mining, US) The end or edge of a vein nearest the surface.

(typography) A diacritic in Classical Latin that resembles and gave rise to the acute.

(typography) A diacritic in Middle Vietnamese that indicates /ŋ͡m/.

(typography) 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".

(attributive, ecology) The top of the food chain

Synonyms

• (highest point): peak, top, summit

• (moment of greatest success, expansion, etc): acme, culmination, height, peak, pinnacle

• (pointed end): end, tip

• See also apex

Coordinate terms

• (sharp upward point): vertex

Source: Wiktionary


A"pex, n.; pl. E. Apexes; L. Apices. Etym: [L.]

1. 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.

2. (Mining)

Definition: The end or edge of a vein nearest the surface. [U.S.] Apex of the earth's motion (Astron.), that point of the heavens toward which the earth is moving in its orbit.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

29 May 2025

CRITICAL

(adjective) characterized by careful evaluation and judgment; “a critical reading”; “a critical dissertation”; “a critical analysis of Melville’s writings”


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Coffee Trivia

Plain brewed coffee contains almost no calories, while coffee with dairy products, sugar, and other flavorings is much higher in calories. An espresso has 20 calories. A nonfat latte has 72, while a flavored one has 134.

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