rational

名词 n. 形容词 adj.
中文释义
发音 ră'sh(ə)nəl

英文释义

名词 n.
  1. A rational number: a number that can be expressed as the quotient of two integers.
    — The quotient of two rationals is again a rational.
  2. The breastplate worn by Israelite high priests. historical
    — The Rationale of iudgement alſo thou shalt mke with embrodered worke of diuers colours, according to the workmanship of the Ephod of gold, hyacinth, and purple, and ſcarlet twiſe died, and twiſted ſilke.
形容词 adj.
  1. Capable of reasoning.
    — Man is a rational creature.
  2. Capable of reasoning.; Behaving according to some partial order of preferences.
  3. Logically sound; not self-contradictory or otherwise absurd.
    — His statements were quite rational.
  4. Healthy or balanced intellectually; exhibiting reasonableness.
    — rational conduct
  5. Comprising, or expressible as, a ratio; Of a number, capable of being expressed as the ratio of two integers. not-comparable
    — ¾ is a rational number, but √2 is an irrational number.
  6. Comprising, or expressible as, a ratio; Of an algebraic expression in indeterminates, or more generally a function: capable of being expressed as the ratio of two polynomials. not-comparable
  7. Comprising, or expressible as, a ratio; Of a variety: (informally) geometrically simple almost everywhere; (formally) birationally equivalent to projective space not-comparable
  8. Comprising, or expressible as, a ratio; Of a function between varieties: acting as a morphism on an open subset of its domain. not-comparable
  9. Comprising, or expressible as, a ratio; Of a point on an algebraic variety over a field: whose coordinates belong to the field in question (in contrast to those points of the variety which are only defined over the algebraic closure of the base field). not-comparable
  10. synonymous replacement for "condensed" in condensed formula. obsolete

词形变化

more rational comparative most rational superlative rationall alternative,obsolete rationals plural rationall alternative,obsolete rationals plural rationall alternative,obsolete

词汇关系

反义词
absurd irrational nonsensical arbitrary arational non-rational
衍生词
antirational biorational birational contrarational extrarational hyperrational nonrational overrational prerational preterrational pseudorational Ratfor rational basis review rational choice theory rational dress rational egoism rational egoist rational function rational horizon rationalisation rationalism rationalist rationalistic rationalization rationally rational numbers rational root theorem rational selfishness rational symptom semirational superrational transrational ultrarational unirational unrational
相关词
arational irrational non-rational rationale rationality rationalness subrational suprarational

词源

词源 1
From Old French rationel, rational, from Latin rationalis (“of or belonging to reason, rational, reasonable; having a ratio”), from ratio (“reason; calculation”).
词源 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 λογεῖον (logeîon) or perhaps λόγιον (lógion, “oracle”) in the Septuagint version of Exodus 28.
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