单词 | catacoustics |
释义 | catacoustics|kætəˈkaʊstɪks| [mod. f. cata- in sense ‘against and back from’ + acoustics. In F. catacoustique. Cf. catoptrics.] 1. A name for the science of reflected sounds.
1683Phil. Trans. XIV. 473 Hearing may be divided into Direct, Refracted, and Reflex'd, which are yet nameless, unless we call them Acousticks, Diacousticks, and Catacousticks. 1721in Bailey. 1751in Chambers Cycl. In all mod. Dicts. 2. (See quot.)
1803Rees Cycl., Catacoustics are écoutes or small galleries from distance to distance in front of the glacis of a fortified place. |

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