seismology
/saɪzˈmɑl.ə.d͡ʒi/
"seismology" is a 10-letter English headword indexed on PlainSpell.
The verdict
“seismology” is uncommon English (frequency #66,278 among 6,566 “S” headwords), classed as a noun. The kind of spelling people second-guess.
- #66,278
- frequency rank, English
- 6,566
- “S” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The study of the vibration of the Earth's interior caused by natural and unnatural sources, such as earthquakes.
Corpus desk
Index EN-seismology · seismology · English
seismology · rank #66,278 · 0 variants · 0 confusables
- FREQ-RARE #66,278
- LEN-MEGA 10 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 6,566
- PHOTO-FINISH semiotic
Nearest frequency peer: semiotic (+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 “seismology”
Sparse band: bars invert rank so rarer forms read shorter
- screwy
screwy
33,727 corpus weight
- scrubby
scrubby
33,726 corpus weight
- seismology
seismology
33,723 corpus weight
- semiotic
semiotic
33,722 corpus weight
- sentai
sentai
33,721 corpus weight
- Sentosa
Sentosa
33,720 corpus weight
What this shows Long-tail view: where “seismology” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | seismology |
| Language | English |
| Part of speech | Noun |
| IPA | /saɪzˈmɑl.ə.d͡ʒi/ |
| Letters | 10 |
| Frequency rank | #66,278 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “seismology” in English
Rare enough to double-check
seismology is uncommon English at frequency #66,278 among 6,566 “S” headwords, classed as anoun, transcribed /saɪzˈmɑl.ə.d͡ʒi/. Rarity is why readers land here mid-draft. Gloss: "The study of the vibration of the Earth's interior caused by natural and unnatural sources, such as earthquakes.".
No generated misspelling entries exist for seismology in our index, typically a sign the spelling maps closely to how the word sounds. It is not paired with a close-neighbour confusable in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: From seismo- + -logy. The correct English form is seismology, spelled S-E-I-S-M-O-L-O-G-Y.
Definition
- 1The study of the vibration of the Earth's interior caused by natural and unnatural sources, such as earthquakes.
Etymology
From seismo- + -logy.
This word in other languages
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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "seismology", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 10 letters (nearest by frequency rank).