ratiocination

C2+ Topic:Cause, Change & Process

US /ˌræʃiˌɑsɪˈneɪʃən/ UK /ˌrætiˌɒsɪˈneɪʃən/ See IPA manual

Meanings

1

noun
the process of methodical, logical reasoning

The detective solved the case by pure ratiocination, never leaving his armchair.

Thesaurus

Synonyms

1 noun · the process of methodical,... reasoning deduction logic inference cogitationratiocinating

Opposites

intuition

Word family

Forms ratiocinative

Related forms ratiocinateratio rational reason

Etymology

From Latin ratiocinatio ('a reasoning, calculation'), from ratiocinari ('to calculate, reason'), from ratio ('reckoning, reason').

ratiocinatio Latin ratio Latin

View etymology graph ->

Topics

Cause, Change & Process Word Formation & Derivatives

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# ratiocination

**Type:** Word
**Level:** C2+
**Part of speech:** noun
**IPA (US):** /ˌræʃiˌɑsɪˈneɪʃən/
**IPA (UK):** /ˌrætiˌɒsɪˈneɪʃən/

## Meanings
1. the process of methodical, logical reasoning

## Examples
- The detective solved the case by pure ratiocination, never leaving his armchair.

## Synonyms
- reasoning
- deduction
- logic
- inference
- cogitation
- ratiocinating

## Antonyms
- intuition

## Related Forms
- ratiocinate
- ratio
- rational
- reason

## Roots and Affixes
- Root: ratiocinatio
- Root: ratio

## Etymology
From Latin ratiocinatio ('a reasoning, calculation'), from ratiocinari ('to calculate, reason'), from ratio ('reckoning, reason').

## AI Etymology
Ratiocination comes from Latin ratiocinatio ('a reasoning, calculation'), from ratiocinari ('to calculate, reason'), from ratio ('reckoning, reason'). The historical chain includes Latin ratiocinatio and Latin ratio. Older glosses in the chain include "a reasoning, calculation", "to calculate, reason", and "reckoning, reason", which help explain the semantic range of the modern word. Morphologically, ratiocination is best read as borrowing, yielding an English noun shaped by both form history and later usage. In current English it functions as a noun, with the sense "the process of methodical, logical reasoning". related forms include ratiocinate, ratio, rational, and reason. The result is an English noun whose etymology preserves the older forms while supporting the word's specialized modern meaning.

## Topics
- Cause, Change & Process
- Word Formation & Derivatives

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ratiocination

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