| 单词 | perfect |
| 释义 | perfect adj., v., & n. --adj 1. complete; not deficient. 2. faultless (a perfect diamond). 3. very satisfactory (a perfect evening). 4. exact; precise (a perfect circle). 5. entire; unqualified (a perfect stranger). 6. Math. (of a number) equal to the sum of its divisors. 7. Gram. (of a tense) denoting a completed action or event in the past, formed in English with have or has and the past participle, as in they have eaten. 8. Mus. (of pitch) absolute. 9. Bot. a (of a flower) having all four types of whorl. b (of a fungus) in the stage where the sexual spores are formed. 10. (often foll. by in) thoroughly trained or skilled (is perfect in geometry). --vtr. 1. make perfect; improve. 2. carry through; complete. 3. complete (a sheet) by printing the other side. --n Gram. the perfect tense. Phrases and idioms perfect binding a form of bookbinding in which the leaves are attached to the spine by gluing rather than sewing. perfect interval Mus. a fourth or fifth as it would occur in a major or minor scale starting on the lower note of the interval, or octave. perfect pitch = absolute pitch 1. Derivatives perfecter n. perfectible adj. perfectibility n. perfectness n. Etymology: ME and OF parfit, perfet f. L perfectus past part. of perficere complete (as PER-, facere do) |
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