| 单词 | spiral |
| 释义 | spiral adj., n., & v. --adj 1. winding about a centre in an enlarging or decreasing continuous circular motion, either on a flat plane or rising in a cone; coiled. 2. winding continuously along or as if along a cylinder, like the thread of a screw. --n 1. a plane or three-dimensional spiral curve. 2. a spiral spring. 3. a spiral formation in a shell etc. 4. a spiral galaxy. 5. a progressive rise or fall of prices, wages, etc., each responding to an upward or downward stimulus provided by the other (a spiral of rising prices and wages). --v (spiralled, spiralling; US spiraled, spiraling) 1. intr. move in a spiral course, esp. upwards or downwards. 2. tr. make spiral. 3. intr. esp. Econ. (of prices, wages, etc.) rise or fall, esp. rapidly (cf. sense 5 of n.). Phrases and idioms spiral balance a device for measuring weight by the torsion of a spiral spring. spiral galaxy a galaxy in which the matter is concentrated mainly in one or more spiral arms. spiral staircase a staircase rising in a spiral round a central axis. Derivatives spirality n. spirally adv. Etymology: F spiral or med.L spiralis (as SPIRE(2)) |
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