tachometer
/təˈkɒmətə(ɹ)/
"tachometer" is a 10-letter English headword indexed on PlainSpell.
The verdict
“tachometer” is uncommon English (frequency #74,557 among 27,828 “T” headwords), classed as a noun. The kind of spelling people second-guess.
- #74,557
- frequency rank, English
- 27,828
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A device for measuring the revolutions per minute (RPMs) of a revolving shaft, as with the driveshaft of an automobile.
| Property | Value |
|---|---|
| Headword | tachometer |
| Language | English |
| Part of speech | Noun |
| IPA | /təˈkɒmətə(ɹ)/ |
| Letters | 10 |
| Frequency rank | #74,557 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “tachometer” sits in English frequency
Rare enough to double-check
tachometer is uncommon English at frequency #74,557 among 27,828 “T” headwords, classed as anoun, transcribed /təˈkɒmətə(ɹ)/. Rarity is why readers land here mid-draft. 2 senses are on record.
The misspelling generator found no plausible variants for tachometer, 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 tacho- + -meter. The correct English form is tachometer, spelled T-A-C-H-O-M-E-T-E-R.
Definition
- 1A device for measuring the revolutions per minute (RPMs) of a revolving shaft, as with the driveshaft of an automobile.
- 2A device for measuring or indicating velocity or speed, as of blood, a river, a machine, etc.
Etymology
From tacho- + -meter.
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); 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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Using “tachometer”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is T-A-C-H-O-M-E-T-E-R - every other letter order is a misspelling in standard orthography.
- Say it as /təˈkɒmətə(ɹ)/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
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.