ratiocination
/ɹætɪˌɒsɪˈneɪʃn̩/
"ratiocination" is a 13-letter English headword indexed on PlainSpell.
The verdict
“ratiocination” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 13
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Reasoning, conscious deliberate inference; the activity or process of reasoning.
Corpus desk
Index EN-ratiocination · ratiocination · English
ratiocination · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 13 letters
- VOW-7 7 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 | ratiocination |
| Language | English |
| Part of speech | Noun |
| IPA | /ɹætɪˌɒsɪˈneɪʃn̩/ |
| Letters | 13 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “ratiocination” in English
Rare enough to double-check
ratiocination is uncommon English outside the top frequency list, classed as anoun, transcribed /ɹætɪˌɒsɪˈneɪʃn̩/. Rarity is why readers land here mid-draft. 3 senses are on record.
ratiocination doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. This headword has no recorded confusable partner, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: Borrowed from French ratiocination, from Latin ratiōcinātiō (“argumentation, reasoning, ratiocination; a syllogism”), from ratiōcinātus (“reckoned”) + -tiō (suffix forming a noun relating to some action or the result of an action). Ratiōcinātus is the perfe… The correct English form is ratiocination, spelled R-A-T-I-O-C-I-N-A-T-I-O-N.
Definition
- 1Reasoning, conscious deliberate inference; the activity or process of reasoning.
- 2Thought or reasoning that is exact, valid and rational.
- 3A proposition arrived at by such thought.
Recorded use
Wiktionary examplesThese source excerpts show how ratiocination appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
But it will be apparent from the refutation of the ſecond Falſification, wherewith you charge the Author of the Letters, that theſe miſchievous conſequences are rightly drawn from the wicked principle layd down by Vaſquez [Gabriel Vásquez] in the ſame place, and accordingly, that that Jeſuit hath not done violence to the rules of ratiocination, but to tho…
He'd run in Debt by Diſputation, / And pay with Ratiocination. / All this by Syllogiſm, true / In Mood and Figure, he wou'd do.
Etymology
Borrowed from French ratiocination, from Latin ratiōcinātiō (“argumentation, reasoning, ratiocination; a syllogism”), from ratiōcinātus (“reckoned”) + -tiō (suffix forming a noun relating to some action or the result of an action). Ratiōcinātus is the perfect passive participle of ratiōcinor (“to compute, reckon; to argue, infer”), from ratiō (“reason, explanation”) (from reor (“to calculate, reckon”), possibly from Proto-Italic *rēōr, from Proto-Indo-European *h₂reh₁- (“to put in order”)) + -cinor, modelled after vāticinor (“to foretell, prophesy”), equivalent to ratiocinate + -ion.
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.