archaea

/ɑːˈkiːə/

//ɑːˈkiːə// noun

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

"archaea" is a 7-letter English headword indexed on PlainSpell.

The verdict

“archaea” is uncommon English (frequency #66,469 among 3,931 “A” headwords), classed as a noun. The kind of spelling people second-guess.

#66,469
frequency rank, English
3,931
“A” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - plural of archaeon

Corpus desk

Index EN-archaea · archaea · English

archaea · rank #66,469 · 0 variants · 0 confusables

  • FREQ-RARE #66,469
  • LEN-LONG 7 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH arcadian

Nearest frequency peer: arcadian (-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 “archaea”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for archaea
PropertyValue
Headwordarchaea
LanguageEnglish
Part of speechNoun
IPA/ɑːˈkiːə/
Letters7
Frequency rank#66,469
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “archaea” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).archaeafalls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “arcadian” (#66,468), “approbation” (#66,467), “ARPA” (#66,471). Among 3,931 “A” headwords, “archaea” is #66,469. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

archaea is uncommon English at frequency #66,469 among 3,931 “A” headwords, classed as anoun, transcribed /ɑːˈkiːə/. Rarity is why readers land here mid-draft. Gloss: "plural of archaeon".

archaea doesn't appear in our generated misspelling index, suggesting the orthography follows predictable English patterns. Our confusable-pair dataset has no match for it, since no other headword is close enough in sound or shape to pair with it.

This entry's etymology isn't recorded, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct English form is archaea, spelled A-R-C-H-A-E-A.

Definition

  1. 1
    plural of archaeon

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 "archaea"?
"archaea" is spelled A-R-C-H-A-E-A. The IPA pronunciation is /ɑːˈkiːə/.
What does "archaea" mean?
As a noun, "archaea" means: plural of archaeon
How do you pronounce "archaea"?
The IPA (International Phonetic Alphabet) transcription for "archaea" is /ɑːˈkiːə/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "archaea" come from?
"archaea" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
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 "archaea", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

Athlone#66,475Alnwick#66,457Avraham#66,481Aligarh#66,450

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

Source: FrequencyWords open word-frequency list