cast iron
"cast-iron" is a 8-letter English headword indexed on PlainSpell.
The verdict
“cast iron” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A hard and brittle, but strong, alloy of iron, carbon, and silicon, formed by casting in a mould.
Corpus desk
Index EN-cast-iron · cast iron · English
cast iron · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 9 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "C" thin
- PHOTO-UNK Peer pending
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | cast iron |
| Language | English |
| Part of speech | Noun |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “cast iron” in English
Rare enough to double-check
cast iron is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A hard and brittle, but strong, alloy of iron, carbon, and silicon, formed by casting in a mould.".
cast iron has no tracked misspelling variants, and the word's spelling is regular enough that our generator found nothing worth flagging. No close-neighbour confusable shows up for this headword in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: Derived from the casting of this form of iron. See wrought iron for comparison. The correct English form is cast iron, spelled C-A-S-T- -I-R-O-N.
Definition
- 1A hard and brittle, but strong, alloy of iron, carbon, and silicon, formed by casting in a mould.
Recorded use
Wiktionary examplesThese source excerpts show how cast iron appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Cast iron is popular for cookware where an even heating temperature is important.
The history of cast iron in railway bridges is much more grimly chequered. Brunel's misgivings were proved prudent, tragically, in the 1879 failure of Thomas Bouch's Tay bridge (once a monument to cast iron, now a memorial to many lives lost).
Etymology
Derived from the casting of this form of iron. See wrought iron for comparison.
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.