[rash-ee-os-uh-ney-shuh n, -oh-suh-, rat-ee-] /ˌræʃ iˌɒs əˈneɪ ʃən, -ˌoʊ sə-, ˌræt i-/
the process of logical reasoning.
“process of reasoning,” 1520s, from Latin ratiocinationem (nominative ratiocinatio) “a reasoning, calm reasoning,” from past participle stem of ratiocinare “to calculate, deliberate,” from ratio (see ratio) + -cinari, which probably is related to conari “to try” (see conation).
Most writers make ratiocination synonymous with reasoning. J.S. Mill and others hold that the word is usually limited to necessary reasoning. [Century Dictionary]
[rey-shee-om-i-ter] /ˌreɪ ʃiˈɒm ɪ tər/ noun 1. (in three-color photography) a device for determining the exposure factors of the filters to be used.
[rash-uh n, rey-shuh n] /ˈræʃ ən, ˈreɪ ʃən/ noun 1. a fixed allowance of provisions or food, especially for soldiers or sailors or for civilians during a shortage: a daily ration of meat and bread. 2. an allotted amount: They finally saved up enough gas rations for the trip. 3. rations. verb (used with object) […]
[rash-uh-nal] /ˌræʃ əˈnæl/ noun 1. the fundamental reason or reasons serving to account for something. 2. a statement of reasons. 3. a reasoned exposition of principles. /ˌræʃəˈnɑːl/ noun 1. a reasoned exposition, esp one defining the fundamental reasons for a course of action, belief, etc n. 1650s, “exposition of principles,” from Late Latin rationale, noun […]
- Rational-emotive therapy
[rash-uh-nl-i-moh-tiv] /ˈræʃ ə nl ɪˈmoʊ tɪv/ noun, Psychology. 1. a form of therapy in which a patient is asked to reject irrational attitudes and assumptions in order to deal effectively with stressful situations.