bilayer
"bilayer" is a 7-letter English headword indexed on PlainSpell.
The verdict
“bilayer” is uncommon English (frequency #66,507 among 31,241 “B” headwords), classed as a noun. The kind of spelling people second-guess.
- #66,507
- frequency rank, English
- 31,241
- “B” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any structure consisting of two layers of molecules
| Property | Value |
|---|---|
| Headword | bilayer |
| Language | English |
| Part of speech | Noun |
| Letters | 7 |
| Frequency rank | #66,507 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “bilayer” sits in English frequency
Rare enough to double-check
bilayer is uncommon English at frequency #66,507 among 31,241 “B” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Any structure consisting of two layers of molecules".
bilayer doesn't appear in our generated misspelling index, suggesting the orthography follows predictable English patterns. We don't track a confusable pairing for this entry, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From bi- + layer. The correct English form is bilayer, spelled B-I-L-A-Y-E-R.
Definition
- 1Any structure consisting of two layers of molecules
Etymology
From bi- + layer.
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 “bilayer”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is B-I-L-A-Y-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.