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quadrilateral

quad·ri·lat·er·al/ˌkwɑdɹəˈlætəɹəl/noun, adjective

quadrilateral is spelled Q-U-A-D-R-I-L-A-T-E-R-A-L: 13 letters and 5 syllables (quad·ri·lat·er·al). It appears about once in every 4 million words in written English, the 61,481st most frequent word form (wordfreq, 2021 data). As a noun, quadrilateral means “A polygon with four sides” (English Wiktionary, September 2026). The plural of quadrilateral is quadrilaterals.

How many letters and syllables are in quadrilateral?

Letters13: Q-U-A-D-R-I-L-A-T-E-R-A-L
Syllables5: quad·ri·lat·er·al
In writingabout once in every 4 million words; the 61,481st most frequent word form
Wrong spellings searchednone measured in search
Rhymes with

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); rhymes and same-letter words are computed by PlainSpell from its own word list.

How common is quadrilateral?

Quadrilateral appears about once in every 4 million words in written English, the 61,481st 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 quadrilateral?

  • UK /ˌkwɒdɹɪˈlætəɹəl/
  • US /ˌkwɑdɹəˈlætəɹəl/
  • US [ˌkʰw̥ɑd̠ɹ̠˔ʷɪ̈ˈlæɾəɹəɫ]

Quadrilateral has 5 syllables, split quad·ri·lat·er·al in writing.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-quadrilateral.ogg, En-ca-quadrilateral.oga, Wikimedia Commons (author and licence on each file's page).

What rhymes with quadrilateral?

2 words on PlainSpell end in the same sounds as quadrilateral from its last stressed vowel (/ætəɹəl/):

Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).

Forms of quadrilateral

  • quadrilaterals plural

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

What does quadrilateral mean?

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

noun

  1. 1

    A polygon with four sides.

    Meronyms: angle, side; see also Thesaurus:polygon

  2. 2

    An area defended by four fortresses supporting each other.

    The Venetian quadrilateral comprised Mantua, Peschiera, Verona, and Legnano.

adjective

  1. 1

    Having four sides.

    They spoke at a quadrilateral meeting of the trade ministers of the United States, the European Union, Canada, and Japan.

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

Quadrilateral in Spanish, French, German and Portuguese

LanguageWords
Frenchquadrilatère, quadrangle (polygon having four sides), quadrilatéral (having four sides)
GermanViereck (polygon having four sides), vierseitig, vierkantig (having four sides)
Portuguesequadrilátero, quadrângulo (polygon having four sides), quadrilateral (having four sides)
Spanishcuadrilátero (polygon having four sides)

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 quadrilateral come from?

Learned borrowing from New Latin quadrilaterus + -al.

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

What to look up after quadrilateral