borosilicate
"borosilicate" is a 12-letter English headword indexed on PlainSpell.
The verdict
“borosilicate” is uncommon English (frequency #85,051 among 31,241 “B” headwords), classed as a noun. The kind of spelling people second-guess.
- #85,051
- frequency rank, English
- 31,241
- “B” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any of various minerals whose structure is formally that of a dual salt of boric and silicic acids.
| Property | Value |
|---|---|
| Headword | borosilicate |
| Language | English |
| Part of speech | Noun |
| Letters | 12 |
| Frequency rank | #85,051 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “borosilicate” sits in English frequency
Rare enough to double-check
borosilicate is uncommon English at frequency #85,051 among 31,241 “B” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Any of various minerals whose structure is formally that of a dual salt of boric and silicic acids.".
We couldn't generate a plausible misspelling set for borosilicate, 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 tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From boro- + silicate. The correct English form is borosilicate, spelled B-O-R-O-S-I-L-I-C-A-T-E.
Definition
- 1Any of various minerals whose structure is formally that of a dual salt of boric and silicic acids.
Etymology
From boro- + silicate.
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 “borosilicate”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is B-O-R-O-S-I-L-I-C-A-T-E - 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.