| 单词 | irrational |
| 释义 | irrational —irrationally, adv. —irrationalness, n. /i rash"euh nl/, adj. 1. without the faculty of reason; deprived of reason. 2. without or deprived of normal mental clarity or sound judgment. 3. not in accordance with reason; utterly illogical: irrational arguments. 4. not endowed with the faculty of reason: irrational animals. 5. Math. a. (of a number) not capable of being expressed exactly as a ratio of two integers. b. (of a function) not capable of being expressed exactly as a ratio of two polynomials. 6. Algebra. (of an equation) having an unknown under a radical sign or, alternately, with a fractional exponent. 7. Gk. and Lat. Pros. a. of or pertaining to a substitution in the normal metrical pattern, esp. a long syllable for a short one. b. noting a foot or meter containing such a substitution. n. 8. Math. See irrational number. [1425-75; late ME < L irrationalis. See IR-2, RATIONAL] Syn. 3. unreasonable, ridiculous; insensate. |
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