kernel

/ˈkɜː.nəl/

//ˈkɜː.nəl// noun

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

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

The verdict

“kernel” is a moderately-common English word, ranked #13,374 in English word frequency and used as a noun.

#13,374
frequency rank, English
6
letters
9
tracked misspellings
10
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The core, center, or essence of an object or system.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

kernel vs Keynes
50% similar
kernel vs keel
67% similar
kernel vs kern
67% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for kernel
PropertyValue
Headwordkernel
LanguageEnglish
Part of speechNoun
IPA/ˈkɜː.nəl/
Letters6
Frequency rank#13,374
Misspellings tracked9
Confusable pairs10
SourceWiktionary (kaikki.org)

Where “kernel” sits in English frequency

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

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for kernel is 6 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈkɜː.nəl/. Corpus data places it at rank #13,374 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 18 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 9 likely wrong-spelling variants for kernel, with forms such as "ekrnel", "kenrel", and "kerenl". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 10 confusable-pair relationships, "Keynes", "keel", "kern", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English kernel, kirnel, kürnel, from Old English cyrnel, from Proto-West Germanic *kurnil, diminutive of Proto-Germanic *kurną (“seed, grain, corn”), equivalent to corn + -le. Cognate with Yiddish קערנדל (kerndl), Middle Dutch kernel, cornel, Mi… The correct English form is kernel, spelled K-E-R-N-E-L.

Definition

  1. 1
    The core, center, or essence of an object or system.
  2. 2
    The central (usually edible) part of a nut, especially once the hard shell has been removed.
  3. 3
    A single seed of grain, especially of corn or wheat.
  4. 4
    The stone of certain fruits, such as peaches or plums.
  5. 5
    A small mass around which other matter is concreted; a nucleus; a concretion or hard lump in the flesh.
  6. 6
    The central part of many computer operating systems which manages the system's resources and the communication between hardware and software components.
  7. 7
    The core engine of any complex software system.
  8. 8
    The simplified input to an algorithm that has undergone kernelization.
  9. 9
    A function used to define an integral transform.
  10. 10
    The set of pairs of elements in the domain of f which are mapped to the same value; the equivalence relation x≡y⟺f(x)=f(y).
  11. 11
    The set of elements of the domain of f which are mapped to an identity element.
  12. 12
    The set of elements of the domain of f which are mapped to an identity element.
  13. 13
    The set of elements of the domain of f which are mapped to an identity element.
  14. 14
    The equalizer of f and the zero morphism from X to Y, denoted operatorname kerf.
  15. 15
    The equalizer of f and the zero morphism from X to Y, denoted operatorname kerf.
  16. 16
    The set of members of a fuzzy set that are fully included (i.e., whose grade of membership is 1).
  17. 17
    The human clitoris.
  18. 18
    The nucleus and electrons of an atom excluding its valence electrons.

Etymology

From Middle English kernel, kirnel, kürnel, from Old English cyrnel, from Proto-West Germanic *kurnil, diminutive of Proto-Germanic *kurną (“seed, grain, corn”), equivalent to corn + -le. Cognate with Yiddish קערנדל (kerndl), Middle Dutch kernel, cornel, Middle High German kornel. Related also to Old Norse kjarni (“kernel”).

This word in other languages

núcleo(Español)fond(Français)Kern(Deutsch)cerne(Português)

Common misspellings

Also misspelled as: ekrnel,kenrel,kerenl,kernell,kernle,kernnel,kerrnel,kkernel,krenel

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of kernel - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

ekrnel2kenrel2kerenl2kernell1kernle2kernnel1kerrnel1kkernel1
Edit distance from "kernel"

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 "kernel"?
"kernel" is spelled K-E-R-N-E-L. The IPA pronunciation is /ˈkɜː.nəl/.
What does "kernel" mean?
As a noun, "kernel" means: The core, center, or essence of an object or system.
What words are commonly confused with "kernel"?
"kernel" is commonly confused with "Keynes", "keel", "kern". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "kernel"?
The IPA (International Phonetic Alphabet) transcription for "kernel" is /ˈkɜː.nəl/. 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 "kernel"?
From Middle English kernel, kirnel, kürnel, from Old English cyrnel, from Proto-West Germanic *kurnil, diminutive of Proto-Germanic *kurną (“seed, grain, corn”), equivalent to corn + -le. Cognate with Yiddish קערנדל (kerndl), Middle Dutch kernel, ... 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 “kernel”

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

  • The one correct English spelling is K-E-R-N-E-L - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈkɜː.nəl/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “Keynes” - see the side-by-side comparison. kernel vs Keynes
  • 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 FrequencyWords open word-frequency list