septal

/ˈsɛp.təl/

//ˈsɛp.təl// adj

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

"septal" is a 6-letter English headword indexed on PlainSpell.

The verdict

“septal” is uncommon English (frequency #63,239 among 6,566 “S” headwords), classed as an adjective. The kind of spelling people second-guess.

#63,239
frequency rank, English
6,566
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Of or pertaining to a septum.

Corpus desk

Index EN-septal · septal · English

septal · rank #63,239 · 0 variants · 0 confusables

  • FREQ-RARE #63,239
  • LEN-LONG 6 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH serially

Nearest frequency peer: serially (+1 rank slots)

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.

Long-tail ranks near “septal”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “septal” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for septal
PropertyValue
Headwordseptal
LanguageEnglish
Part of speechAdjective
IPA/ˈsɛp.təl/
Letters6
Frequency rank#63,239
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “septal” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).septalfalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “serially” (#63,240), “seducer” (#63,235), “seascape” (#63,233). Among 6,566 “S” headwords, “septal” is #63,239. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

septal is uncommon English at frequency #63,239 among 6,566 “S” headwords, classed as anadjective, transcribed /ˈsɛp.təl/. Rarity is why readers land here mid-draft. 2 senses are on record.

No misspelling variants are generated for septal in our index, suggesting the orthography follows predictable English patterns. Our confusable-pair dataset has no match for it, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From septum + -al. The correct English form is septal, spelled S-E-P-T-A-L.

Definition

  1. 1
    Of or pertaining to a septum.
  2. 2
    Separating compartments in a burial chamber.

Etymology

From septum + -al.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "septal"?
"septal" is spelled S-E-P-T-A-L. The IPA pronunciation is /ˈsɛp.təl/.
What does "septal" mean?
As an adjective, "septal" means: Of or pertaining to a septum.
How do you pronounce "septal"?
The IPA (International Phonetic Alphabet) transcription for "septal" is /ˈsɛp.təl/. 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 "septal"?
From septum + -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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "septal", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

shamus#63,245Sandys#63,221sacrum#63,219snopes#63,259

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

Source: FrequencyWords open word-frequency list