Eocene

/ˈiːəsiːn/

//ˈiːəsiːn// adj

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

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

The verdict

“Eocene” has 7 generated spelling variants in the English index at frequency #36,127. The variants make it a useful spelling check.

#36,127
frequency rank, English
2,246
“E” headwords
7
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Of a geologic epoch within the Paleogene period from about 56 to 34 million years ago.

Corpus desk

Index EN-eocene · Eocene · English

Eocene · rank #36,127 · 7 variants · 2 confusables

  • FREQ-MID #36,127
  • LEN-LONG 6 letters
  • VOW-4 4 vowels
  • CONFUS-LOW 2 pairs
  • VAR-MID 7 variants
  • BOOK-MID 2,246
  • PHOTO-FINISH entre

Nearest frequency peer: entre (-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.

Rank peers near misspelling magnet “Eocene”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “Eocene” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

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

Eocene vs Eugene
67% similar
Eocene vs emcee
50% similar

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

Key facts for Eocene
PropertyValue
HeadwordEocene
LanguageEnglish
Part of speechAdjective
IPA/ˈiːəsiːn/
Letters6
Frequency rank#36,127
Misspellings tracked7
Confusable pairs2
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “Eocene”

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

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “entre” (#36,126), “epigenetic” (#36,128), “eminently” (#36,123). Among 2,246 “E” headwords, “Eocene” is #36,127. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 7 spelling variants around Eocene (IPA /ˈiːəsiːn/), anadjective. Corpus frequency is #36,127 among 2,246 “E” headwords. Dominant gloss: "Of a geologic epoch within the Paleogene period from about 56 to 34 million years ago.".

Our generated misspelling index lists 7 likely wrong-spelling variants for Eocene, with forms such as "ecoene", "eoccene", and "eoceen". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 2 confusable-pair relationships, "Eugene", "emcee", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Ancient Greek ἠώς (ēṓs, “dawn”) + καινός (kainós, “new”) and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. Coined by English polymath William Whewell in 1831 for Charles Lyell, who introduced it in 1833 in his book Princi… The correct English form is Eocene, spelled E-O-C-E-N-E.

Definition

  1. 1
    Of a geologic epoch within the Paleogene period from about 56 to 34 million years ago.

Etymology

From Ancient Greek ἠώς (ēṓs, “dawn”) + καινός (kainós, “new”) and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. Coined by English polymath William Whewell in 1831 for Charles Lyell, who introduced it in 1833 in his book Principles of Geology. By surface analysis, eo- + -cene.

This word in other languages

éocène(Français)eozän(Deutsch)

Common misspellings

Also misspelled as:

  • ecoene
  • eoccene
  • eoceen
  • eocenne
  • eocnee
  • eoecne
  • oecene

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of Eocene - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

ecoene2eoccene1eoceen2eocenne1eocnee2eoecne2oecene2
Edit distance from "Eocene"

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 "Eocene"?
"Eocene" is spelled E-O-C-E-N-E. The IPA pronunciation is /ˈiːəsiːn/.
What does "Eocene" mean?
As an adjective, "Eocene" means: Of a geologic epoch within the Paleogene period from about 56 to 34 million years ago.
What words are commonly confused with "Eocene"?
"Eocene" is commonly confused with "Eugene", "emcee". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "Eocene"?
The IPA (International Phonetic Alphabet) transcription for "Eocene" is /ˈiːəsiːn/. 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 "Eocene"?
From Ancient Greek ἠώς (ēṓs, “dawn”) + καινός (kainós, “new”) and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. Coined by English polymath William Whewell in 1831 for Charles Lyell, who introduced it in 1833 in his b... 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 "Eocene", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

esprit#36,131Elwood#36,122eunuch#36,134extort#36,136

Similar misspelling depth

Headwords with a similar count of attested misspellings (7 here; floor ≥5).

falter7 variantsgetter7 variantscovet7 variantsgourd7 variants

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

Source: FrequencyWords open word-frequency list