calcium carbonate
"calcium-carbonate" is a 16-letter English headword indexed on PlainSpell.
The verdict
“calcium carbonate” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 17
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A colourless or white inorganic compound, CaCO₃, occurring as chalk, limestone, marble etc. Reacts with acids to liberate carbon dioxide.
| Property | Value |
|---|---|
| Headword | calcium carbonate |
| Language | English |
| Part of speech | Noun |
| Letters | 17 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “calcium carbonate” sits in English frequency
Rare enough to double-check
calcium carbonate is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A colourless or white inorganic compound, CaCO₃, occurring as chalk, limestone, marble etc. Reacts with acids to liberate carbon dioxide.".
calcium carbonate doesn't appear in our generated misspelling index, a sign its spelling follows regular English conventions. 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.
No borrowing history is documented for this entry, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is calcium carbonate, spelled C-A-L-C-I-U-M- -C-A-R-B-O-N-A-T-E.
Definition
- 1A colourless or white inorganic compound, CaCO₃, occurring as chalk, limestone, marble etc. Reacts with acids to liberate carbon dioxide.
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). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “calcium carbonate”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-A-L-C-I-U-M- -C-A-R-B-O-N-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
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.