tetragonal

/tɛˈtɹæɡənəl/

//tɛˈtɹæɡənəl// adj

By · According to Wiktionary data (CC BY-SA) ·

"tetragonal" is a 10-letter English headword indexed on PlainSpell.

The verdict

“tetragonal” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Having four sides, like a tetragon.

Key facts for tetragonal
PropertyValue
Headwordtetragonal
LanguageEnglish
Part of speechAdjective
IPA/tɛˈtɹæɡənəl/
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “tetragonal” sits in English frequency

tetragonal falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

tetragonal is uncommon English outside the top frequency list, classed as anadjective, transcribed /tɛˈtɹæɡənəl/. Rarity is why readers land here mid-draft. 2 senses are on record.

No generated misspelling entries exist for tetragonal in our index, which points to an orthography that plays by predictable English rules. We don't track a confusable pairing for this entry, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From tetragon + -al. The correct English form is tetragonal, spelled T-E-T-R-A-G-O-N-A-L.

Definition

  1. 1
    Having four sides, like a tetragon.
  2. 2
    Having two equal axes and one unequal, and all angles 90°.

Etymology

From tetragon + -al.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "tetragonal"?
"tetragonal" is spelled T-E-T-R-A-G-O-N-A-L. The IPA pronunciation is /tɛˈtɹæɡənəl/.
What does "tetragonal" mean?
As an adjective, "tetragonal" means: Having four sides, like a tetragon.
How do you pronounce "tetragonal"?
The IPA (International Phonetic Alphabet) transcription for "tetragonal" is /tɛˈtɹæɡənəl/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "tetragonal"?
From tetragon + -al. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “tetragonal”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is T-E-T-R-A-G-O-N-A-L - every other letter order is a misspelling in standard orthography.
  • Say it as /tɛˈtɹæɡənəl/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list