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apex

a·pex/ˈeɪ.pɛks/noun

apex is spelled A-P-E-X: 4 letters and 2 syllables (a·pex). It appears 5.1 times per million words in written English, the 11,015th most frequent word form (wordfreq, 2021 data). As a noun, apex means “The highest or the greatest part of something, especially forming a point” (English Wiktionary, September 2026). The plural of apex is apices or apexes.

How many letters and syllables are in apex?

Letters4: A-P-E-X
Syllables2: a·pex
In writing5.1 times per million words; the 11,015th most frequent word form
Wrong spellings searchednone measured in search

Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How common is apex?

Apex appears 5.1 times per million words in written English, the 11,015th most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How do you pronounce apex?

  • /ˈeɪ.pɛks/

Apex has 2 syllables, split a·pex in writing.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-apex.wav, Wikimedia Commons (author and licence on each file's page).

Forms of apex

  • apices plural
  • apexes plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What does apex mean?

The meanings the English Wiktionary records, quoted as written there (source below).

noun

  1. 1

    The highest or the greatest part of something, especially forming a point.

    the apex of the building

  2. 2

    The highest point in a plane or solid figure, relative to a base line or plane.

  3. 3

    The lowest part of the human heart.

  4. 4

    The deepest part of a tooth's root.

  5. 5

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

  6. 6

    The growing point of a shoot.

  7. 7

    The point on the celestial sphere toward which the Sun appears to move relative to nearby stars.

  8. 8

    The lowest point on a pendant drop of a liquid.

noun

as APEX
  1. 1

    Acronym of advance purchase excursion (an air fare).

  2. 2

    Acronym of accelerated peritoneal equilibration examination.

  3. 3

    Acronym of acetone peroxide.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Apex in Spanish, French, German and Portuguese

LanguageWords
Frenchapex, sommet (highest or greatest part), apogée (moment of greatest success, expansion, etc)
GermanGipfel (highest or greatest part), Spitze (highest point in a plane or solid figure)
Portugueseápice, topo, cume (highest or greatest part), ponta (pointed fine end)
Spanishápice, cima, sumidad, ápex (highest or greatest part)

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does apex come from?

Borrowed from Latin apex (“point, tip, summit”).

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What to look up after apex