arachidonic

/əˌɹak.ɪˈdɒn.ɪk/

//əˌɹak.ɪˈdɒn.ɪk// adj

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

"arachidonic" is a 11-letter English headword indexed on PlainSpell.

The verdict

“arachidonic” is uncommon English (frequency #81,117 among 3,931 “A” headwords), classed as an adjective. The kind of spelling people second-guess.

#81,117
frequency rank, English
3,931
“A” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Of or pertaining to arachidonic acid or its derivatives.

Corpus desk

Index EN-arachidonic · arachidonic · English

arachidonic · rank #81,117 · 0 variants · 0 confusables

  • FREQ-RARE #81,117
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH arbitrariness

Nearest frequency peer: arbitrariness (+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 “arachidonic”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for arachidonic
PropertyValue
Headwordarachidonic
LanguageEnglish
Part of speechAdjective
IPA/əˌɹak.ɪˈdɒn.ɪk/
Letters11
Frequency rank#81,117
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “arachidonic” 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).arachidonicfalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “arbitrariness” (#81,118), “Arezzo” (#81,119), “argosy” (#81,120). Among 3,931 “A” headwords, “arachidonic” is #81,117. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

arachidonic is uncommon English at frequency #81,117 among 3,931 “A” headwords, classed as anadjective, transcribed /əˌɹak.ɪˈdɒn.ɪk/. Rarity is why readers land here mid-draft. Gloss: "Of or pertaining to arachidonic acid or its derivatives.".

arachidonic has no tracked misspelling variants, a sign its spelling follows regular English conventions. No close-neighbour confusable shows up for this headword in our dataset, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: Formed irregularly from arachidic, from New Latin arachis (“peanut”) + -one + -ic The correct English form is arachidonic, spelled A-R-A-C-H-I-D-O-N-I-C.

Definition

  1. 1
    Of or pertaining to arachidonic acid or its derivatives.

Etymology

Formed irregularly from arachidic, from New Latin arachis (“peanut”) + -one + -ic

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 "arachidonic"?
"arachidonic" is spelled A-R-A-C-H-I-D-O-N-I-C. The IPA pronunciation is /əˌɹak.ɪˈdɒn.ɪk/.
What does "arachidonic" mean?
As an adjective, "arachidonic" means: Of or pertaining to arachidonic acid or its derivatives.
How do you pronounce "arachidonic"?
The IPA (International Phonetic Alphabet) transcription for "arachidonic" is /əˌɹak.ɪˈdɒn.ɪk/. 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 "arachidonic"?
Formed irregularly from arachidic, from New Latin arachis (“peanut”) + -one + -ic 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 "arachidonic", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 11 letters (nearest by frequency rank).

clindamycin#81,226coffeemaker#81,229unwholesome#80,999unfurnished#80,997

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

Source: FrequencyWords open word-frequency list