impregnation

/ɪmpɹɛɡˈneɪʃən/

//ɪmpɹɛɡˈneɪʃən// noun

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

"impregnation" is a 12-letter English headword indexed on PlainSpell.

The verdict

“impregnation” is uncommon English (frequency #70,770 among 2,140 “I” headwords), classed as a noun. The kind of spelling people second-guess.

#70,770
frequency rank, English
2,140
“I” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The act of making pregnant; fertilization.

Corpus desk

Index EN-impregnation · impregnation · English

impregnation · rank #70,770 · 0 variants · 0 confusables

  • FREQ-RARE #70,770
  • LEN-MEGA 12 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH impertinence

Nearest frequency peer: impertinence (-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 “impregnation”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for impregnation
PropertyValue
Headwordimpregnation
LanguageEnglish
Part of speechNoun
IPA/ɪmpɹɛɡˈneɪʃən/
Letters12
Frequency rank#70,770
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “impregnation” 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).impregnationfalls 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: “impertinence” (#70,769), “indexation” (#70,772), “illy” (#70,767). Among 2,140 “I” headwords, “impregnation” is #70,770. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

impregnation is uncommon English at frequency #70,770 among 2,140 “I” headwords, classed as anoun, transcribed /ɪmpɹɛɡˈneɪʃən/. Rarity is why readers land here mid-draft. 4 senses are on record.

No misspelling variants are generated for impregnation in our index, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From Middle English impregnacioun, from Old French impregnacion, in turn from Late Latin impregnatio. The correct English form is impregnation, spelled I-M-P-R-E-G-N-A-T-I-O-N.

Definition

  1. 1
    The act of making pregnant; fertilization.
  2. 2
    The fact or process of imbuing or saturating with something; diffusion of some element, idea etc. through a medium or substance.
  3. 3
    That with which anything is impregnated.
  4. 4
    An ore deposit, with indefinite boundaries, consisting of rock impregnated with ore.

Recorded use

Wiktionary examples

These source excerpts show how impregnation appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Earths and alkalies are simply metallic oxides; whilst a farther impregnation of these substances with oxygen produces an acid....
  2. Oil-shales are often the last relics of a former impregnation with petroleum; they are associated with phenomena—such as the intrusive asphaltites or manjacks—common to petroliferous regions, but in many cases the parent oilfields, the sources of the former impregnation, are things of the past.

Etymology

From Middle English impregnacioun, from Old French impregnacion, in turn from Late Latin impregnatio.

This word in other languages

fecundación(Español)fécondation(Français)Befruchtung(Deutsch)

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 "impregnation"?
"impregnation" is spelled I-M-P-R-E-G-N-A-T-I-O-N. The IPA pronunciation is /ɪmpɹɛɡˈneɪʃən/.
What does "impregnation" mean?
As a noun, "impregnation" means: The act of making pregnant; fertilization.
How do you pronounce "impregnation"?
The IPA (International Phonetic Alphabet) transcription for "impregnation" is /ɪmpɹɛɡˈneɪʃən/. 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 "impregnation"?
From Middle English impregnacioun, from Old French impregnacion, in turn from Late Latin impregnatio. 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 "impregnation", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 12 letters (nearest by frequency rank).

impertinence#70,769indoctrinate#70,773gratuitously#70,714endeavouring#70,636

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

Source: FrequencyWords open word-frequency list