micrometre
/ˈmaɪkɹəˌmiːtə(ɹ)/
"micrometre" is a 10-letter English headword indexed on PlainSpell.
The verdict
“micrometre” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 10
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An SI and mks unit of measure, the length of one-millionth of a metre. Symbol: μm, um, μ.
Corpus desk
Index EN-micrometre · micrometre · English
micrometre · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 10 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "M" 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 | micrometre |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈmaɪkɹəˌmiːtə(ɹ)/ |
| Letters | 10 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “micrometre” sits in English frequency
Rare enough to double-check
micrometre is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈmaɪkɹəˌmiːtə(ɹ)/. Rarity is why readers land here mid-draft. Gloss: "An SI and mks unit of measure, the length of one-millionth of a metre. Symbol: μm, um, μ.".
The misspelling generator found no plausible variants for micrometre, typically a sign the spelling maps closely to how the word sounds. No close-neighbour confusable shows up for this headword in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: From micro- + metre. The correct English form is micrometre, spelled M-I-C-R-O-M-E-T-R-E.
Definition
- 1An SI and mks unit of measure, the length of one-millionth of a metre. Symbol: μm, um, μ.
Recorded use
Wiktionary examplesThese source excerpts show how micrometre appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Holonyms: millimetre < centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre
Meronyms: picometre < nanometre
Etymology
From micro- + metre.
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.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
How do you spell "micrometre"?
What does "micrometre" mean?
How do you pronounce "micrometre"?
What is the origin of the word "micrometre"?
Is PlainSpell free to use?
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.