tetragonal

/tɛˈtɹæɡənəl/

//tɛˈtɹæɡənəl// adj

"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 September 3, 2026) - Having four sides, like a tetragon.

Corpus desk

Index EN-tetragonal · tetragonal · English

tetragonal · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "T" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

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

Long-tail rank of “tetragonal” in English

tetragonalsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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°.

Recorded use

Wiktionary example

These source excerpts show how tetragonal appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. The eight normals of the tetragonal scalenohedron may carry the eight faces of a semiform in other ways than asymmetrically as regards the systematic planes.

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.

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

Source: FrequencyWords open word-frequency list