penetration

/pɛ.nɪˈtɹeɪ.ʃən/

//pɛ.nɪˈtɹeɪ.ʃən// noun

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

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

The verdict

“penetration” is a moderately-common English word, ranked #11,086 in English word frequency and used as a noun.

#11,086
frequency rank, English
11
letters
17
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The act of penetrating something.

Visual similarity to commonly confused words

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

penetration vs penetrating
82% similar

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

Key facts for penetration
PropertyValue
Headwordpenetration
LanguageEnglish
Part of speechNoun
IPA/pɛ.nɪˈtɹeɪ.ʃən/
Letters11
Frequency rank#11,086
Misspellings tracked17
Confusable pairs1
SourceWiktionary (kaikki.org)

Where “penetration” 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). penetration 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 penetration is 11 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /pɛ.nɪˈtɹeɪ.ʃən/. Corpus data places it at rank #11,086 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 6 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 17 likely wrong-spelling variants for penetration, with forms such as "epnetration", "peentration", and "penertation". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 1 confusable-pair relationship, "penetrating", a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From Middle English penetracioun, from Old French penetracïon, and its source, Latin penetrātiō, from the participle stem of penetrō (“pierce”, verb). Morphologically penetrate + -ion. The correct English form is penetration, spelled P-E-N-E-T-R-A-T-I-O-N.

Definition

  1. 1
    The act of penetrating something.
  2. 2
    The insertion of the penis (or similar object) during sexual intercourse.
  3. 3
    The act of penetrating a given situation with the mind or faculties; perception, discernment.
  4. 4
    The act of progressing or moving forward through or into something.
  5. 5
    A number or fraction that represents how many cards/decks will be dealt before shuffling, in contrast to the total number of cards/decks in play.
  6. 6
    The proportion of the target audience who buy or use the specified product or service.

Etymology

From Middle English penetracioun, from Old French penetracïon, and its source, Latin penetrātiō, from the participle stem of penetrō (“pierce”, verb). Morphologically penetrate + -ion.

This word in other languages

penetración(Español)pénétration(Français)Penetration(Deutsch)penetração(Português)

Common misspellings

Also misspelled as: epnetration,peentration,penertation,penetartion,penetraiton,penetrasion,penetratino,penetrationn,penetratoin,penetrattion,penetrration,penetrtaion,penettration,pennetration,penteration,pneetration,ppenetration

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of penetration - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

epnetration2peentration2penertation2penetartion2penetraiton2penetrasion1penetratino2penetrationn1
Edit distance from "penetration"

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 "penetration"?
"penetration" is spelled P-E-N-E-T-R-A-T-I-O-N. The IPA pronunciation is /pɛ.nɪˈtɹeɪ.ʃən/.
What does "penetration" mean?
As a noun, "penetration" means: The act of penetrating something.
What words are commonly confused with "penetration"?
"penetration" is commonly confused with "penetrating". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "penetration"?
The IPA (International Phonetic Alphabet) transcription for "penetration" is /pɛ.nɪˈtɹeɪ.ʃən/. 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 "penetration"?
From Middle English penetracioun, from Old French penetracïon, and its source, Latin penetrātiō, from the participle stem of penetrō (“pierce”, verb). Morphologically penetrate + -ion. 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 “penetration”

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

  • The one correct English spelling is P-E-N-E-T-R-A-T-I-O-N - every other letter order is a misspelling in standard orthography.
  • Say it as /pɛ.nɪˈtɹeɪ.ʃən/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “penetrating” - see the side-by-side comparison. penetration vs penetrating
  • 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