nanosecond
"nanosecond" is a 10-letter English headword indexed on PlainSpell.
The verdict
“nanosecond” is uncommon English (frequency #62,353 among 1,534 “N” headwords), classed as a noun. The kind of spelling people second-guess.
- #62,353
- frequency rank, English
- 1,534
- “N” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An SI unit of time equal to 10⁻⁹ seconds. Symbol: ns
Corpus desk
Index EN-nanosecond · nanosecond · English
nanosecond · rank #62,353 · 0 variants · 0 confusables
- FREQ-RARE #62,353
- LEN-MEGA 10 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,534
- PHOTO-FINISH Nathanael
Nearest frequency peer: Nathanael (+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 “nanosecond”
Sparse band: bars invert rank so rarer forms read shorter
- nanosecond
nanosecond
37,648 corpus weight
- Nathanael
Nathanael
37,647 corpus weight
- natick
natick
37,646 corpus weight
- NDI
NDI
37,645 corpus weight
- neuropsycho…
neuropsychology
37,644 corpus weight
- NFP
NFP
37,642 corpus weight
What this shows Long-tail view: where “nanosecond” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | nanosecond |
| Language | English |
| Part of speech | Noun |
| Letters | 10 |
| Frequency rank | #62,353 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “nanosecond” in English
Rare enough to double-check
nanosecond is uncommon English at frequency #62,353 among 1,534 “N” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "An SI unit of time equal to 10⁻⁹ seconds. Symbol: ns".
No generated misspelling entries exist for nanosecond in our index, since its letter pattern doesn't lend itself to common typo substitutions. No confusable counterpart is on file for this word, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From nano- + second. The correct English form is nanosecond, spelled N-A-N-O-S-E-C-O-N-D.
Definition
- 1An SI unit of time equal to 10⁻⁹ seconds. Symbol: ns
Recorded use
Wiktionary examplesThese source excerpts show how nanosecond appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Holonyms: microsecond < millisecond < centisecond < decisecond < second < decasecond < minute < hectosecond < kilosecond < hour < day < week < megasecond < fortnight < month < year < gigasecond < century < kiloannum, kiloyear, millennium < terasecond < mega-annum, megayear < petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronna…
Meronyms: quectosecond < rontosecond < yoctosecond < zeptosecond < attosecond < femtosecond < picosecond
Etymology
From nano- + second.
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 "nanosecond", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 10 letters (nearest by frequency rank).