different between rational vs learned

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

English

Etymology 1

From Middle English lerned, lernd, lernyd, equivalent to learn +? -ed, which replaced the earlier lered (“taught”), from Old English (?e)l?red, past participle of l?ran (“to teach”). Learn formerly had the meaning “to teach”, which is now found only in nonstandard speech, as well as its standard meaning of “to learn”.

Alternative forms

• learnèd, learnéd

Pronunciation

• (UK) IPA^(key): /?l??n?d/
• (US) IPA^(key): /?l?n?d/

Adjective

learned (comparative more learned, superlative most learned)

1. Having much learning, knowledgeable, erudite; highly educated.

   Synonyms: brainy, erudite, knowledgeable, scholarly, educated; see also Thesaurus:learned

   Antonyms: ignorant, stupid, thick, uneducated

   • 1854, Charles Edward Pollock, Lake v. Plaxton, 156 Eng. Rep. 412 (Exch.) 414; 10 Ex. 199, 200 (Eng.)

     My learned Brother Cresswell directed the jury to make the calculation […]
2. (law, formal) A courteous description used in various ways to refer to lawyers or judges.
3. Scholarly, exhibiting scholarship.

Usage notes

• This adjectival sense of this word is sometimes spelled with a grave accent, learnèd. This is meant to indicate that the second ‘e’ is pronounced as /?/ or /?/, rather than being silent, as in the verb form. This usage is largely restricted to poetry and other works in which it is important that the adjective’s disyllabicity be made explicit.

Derived terms

Translations

Etymology 2

From Old English leornian (“to acquire knowledge”)

Alternative forms

• learnt (UK, Ireland, Australia and New Zealand; alternative in Canada; rarely used in American English)

Pronunciation

• (UK) IPA^(key): /l??nd/
• (US) enPR: lûrnd, IPA^(key): /l?nd/

Verb

learned

1. (Canada, US and dialectal English) simple past tense and past participle of learn

Adjective

learned (comparative more learned, superlative most learned)

1. Derived from experience; acquired by learning.

   Everyday behavior is an overlay of learned behavior over instinct.

Translations

References

Further reading

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

Anagrams

• Darleen, Darlene, Leander, relaned