rational number
"rational-number" is a 14-letter English headword indexed on PlainSpell.
The verdict
“rational number” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 15
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A number that can be expressed as the ratio of two integers.
Corpus desk
Index EN-rational-number · rational number · English
rational number · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 15 letters
- VOW-6 6 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "R" 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 | rational number |
| Language | English |
| Part of speech | Noun |
| Letters | 15 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “rational number” in English
Rare enough to double-check
rational number is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A number that can be expressed as the ratio of two integers.".
rational number has no tracked misspelling variants, since its letter sequence doesn't invite the usual edit-distance slips. 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 rational + number, ultimately from Latin rationalis + numerus. Compare analogous logarithm, from Ancient Greek. The correct English form is rational number, spelled R-A-T-I-O-N-A-L- -N-U-M-B-E-R.
Definition
- 1A number that can be expressed as the ratio of two integers.
Etymology
From rational + number, ultimately from Latin rationalis + numerus. Compare analogous logarithm, from Ancient Greek.
Antonyms
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.