sea level
"sea-level" is a 8-letter English headword indexed on PlainSpell.
The verdict
“sea level” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The nominal height of the surface of the oceans above which heights of geographical features and aircraft flight levels are measured.
Corpus desk
Index EN-sea-level · sea level · English
sea level · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "S" thin
- PHOTO-UNK Peer pending
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.
| Property | Value |
|---|---|
| Headword | sea level |
| Language | English |
| Part of speech | Noun |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “sea level” in English
Rare enough to double-check
sea level is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The nominal height of the surface of the oceans above which heights of geographical features and aircraft flight levels are measured.".
sea level has no tracked misspelling variants, since its letter sequence doesn't invite the usual edit-distance slips. It is not paired with a close-neighbour confusable in our dataset, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
This entry carries no recorded etymology, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct English form is sea level, spelled S-E-A- -L-E-V-E-L.
Definition
- 1The nominal height of the surface of the oceans above which heights of geographical features and aircraft flight levels are measured.
Recorded use
Wiktionary examplesThese source excerpts show how sea level appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The summit of Everest is 5.5 miles above sea level.
An altimeter is used for measuring height above sea level.
Synonyms
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). See the methodology for how each field is sourced and updated.