different between rationale vs rational

English

Pronunciation

• (UK) IPA^(key): /?æ.???n??l/
• (US) IPA^(key): /?æ.???næl/
• Rhymes: -æl

Etymology 1

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.) From Latin rati?n?le.

Noun

rationale (plural rationales or rationalia)

1. An explanation of the basis or fundamental reasons for something. (Can we add an example for this sense?)
2. A justification or rationalization for something. (Can we add an example for this sense?)

Synonyms

• (explanation): reasoning, rationalization
• (justification): reasoning

Translations

Etymology 2

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.) From Latin rati?n?le.

Noun

rationale (plural rationales)

1. (rare, religion) A liturgical vestment worn by some Christian bishops of various denominations.
   • 2015, Gregory Dipippo, "Rationale Worn by the Bishop of Eichstätt"[1]

     the local bishop, H.E. Gregor Maria Hanke, is shown wearing that rarest of liturgical garments, the rationale.

Translations

Anagrams

• alienator, taeniolar

Latin

Adjective

rati?n?le

1. nominative singular neuter of rati?n?lis (“rational, of reason”)
2. vocative singular neuter of rati?n?lis (“rational, of reason”)
3. accusative singular neuter of rati?n?lis (“rational, of reason”)

Noun

rati?n?le n (genitive rati?n?lis); third declension

1. The breastplate worn by Israelite high priests (Translation of ??????? (logeîon) or ?????? (lógion, “oracle”) in the Septuagint version of Exodus 28.)
   • Vulgate Bible, Exodus 28:15

     Rationale quoque iudicii facies opere polymito iuxta texturam superumeralis ex auro hyacintho et purpura coccoque bis tincto et bysso retorta (And you shall make the breastplate of judgment with skillful work; like the work of the ephod you shall make it; of gold, of blue, and of purple, and of scarlet, and of fine twined linen, shall you make it.)

2. a rationale worn by a bishop

Declension

Third-declension noun (neuter, “pure” i-stem).

References

• rationale in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette
• rationale in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)

English

Alternative forms

• rationall (obsolete)

Pronunciation

• enPR: r?'sh(?)n?l, IPA^(key): /??æ?(?)n?l/

Etymology 1

From Old French rationel, rational, from Latin rationalis (“of or belonging to reason, rational, reasonable; having a ratio”), from ratio (“reason; calculation”).

Adjective

rational (comparative more rational, superlative most rational)

1. Capable of reasoning.
2. Logically sound; not contradictory or otherwise absurd.

3. (of a person or personal characteristics) Healthy or balanced intellectually; exhibiting reasonableness.
4. (mathematics, arithmetic, number theory, not comparable) Of a number, capable of being expressed as the ratio of two integers.

   ¾ is a rational number, but ?2 is an irrational number.

5. (mathematics, arithmetic, not comparable) Of an algebraic expression, capable of being expressed as the ratio of two polynomials.
6. (chemistry) Expressing the type, structure, relations, and reactions of a compound; graphic; said of formulae.
7. (physics) Expressing a physical object.

Antonyms

• (reasonable): absurd, irrational, nonsensical
• (capable of reasoning): arational, irrational, non-rational
• (number theory): irrational

Related terms

Translations

Noun

rational (plural rationals)

1. (mathematics) A rational number: a number that can be expressed as the quotient of two integers.

   The quotient of two rationals is again a rational.

Translations

Etymology 2

From Old French rational, from Medieval Latin rationale (“a pontifical stole, a pallium, an ornament worn over the chasuble”), neuter of Latin rationalis (“rational”), for which see the first etymology. Translation of ??????? (logeîon) or perhaps ?????? (lógion, “oracle”) in the Septuagint version of Exodus 28.

Noun

rational (plural rationals)

1. (historical) The breastplate worn by Israelite high priests.

Translations

References

• rational in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• rational in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

Further reading

• "rational" in Raymond Williams, Keywords (revised), 1983, Fontana Press, page 252.

Anagrams

• notarial

German

Etymology

From Latin rationalis.

Pronunciation

• IPA^(key): [??at?si?o?na?l]
• Hyphenation: ra?ti?o?nal

Adjective

rational (comparative rationaler, superlative am rationalsten)

1. rational

Declension

Further reading

• “rational” in Duden online