interferometer
"interferometer" is a 14-letter English headword indexed on PlainSpell.
The verdict
“interferometer” is uncommon English (frequency #53,020 among 17,902 “I” headwords), classed as a noun. The kind of spelling people second-guess.
- #53,020
- frequency rank, English
- 17,902
- “I” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any of several instruments that use the interference of waves to determine wavelengths and wave velocities, determine refractive indices, measure small distances, temperature changes, stresses, and...
| Property | Value |
|---|---|
| Headword | interferometer |
| Language | English |
| Part of speech | Noun |
| Letters | 14 |
| Frequency rank | #53,020 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “interferometer” sits in English frequency
Rare enough to double-check
interferometer is uncommon English at frequency #53,020 among 17,902 “I” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Any of several instruments that use the interference of waves to determine wavelengths and wave velocities, determine refractive indices, measure small distances, temperature changes, stresses, and...".
No generated misspelling entries exist for interferometer in our index, a straightforward case of a spelling with little room for common typos. This headword has no recorded confusable partner, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From interfer(e) + -o- + -meter. The correct English form is interferometer, spelled I-N-T-E-R-F-E-R-O-M-E-T-E-R.
Definition
- 1Any of several instruments that use the interference of waves to determine wavelengths and wave velocities, determine refractive indices, measure small distances, temperature changes, stresses, and many other useful measurements.
Etymology
From interfer(e) + -o- + -meter.
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 “interferometer”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-N-T-E-R-F-E-R-O-M-E-T-E-R - every other letter order is a misspelling in standard orthography.
- 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.