soundproof (sound prof)

Impervious to sound; preventing the entrance of sounds. It [silicate of cotton] is of great efficiency as a stuffing for sound - proof walls and flooring. Ure, Dict., IV. 293. sound-radiometer (sound'ra-di-om-e-ter), n. An apparatus devised by Dvorak to show the mechanical effect of sound-waves. It consists of a light cro of wood pivoted with a gla cap upon a vertical needle, and carrying four pieces of card perforated with a number of holes, raised on one side and depre ed on the other like those of a nutmeg-grater. The cro vanes rotate rapidly when placed before the resonance box of a loud-sounding tuning-fork. sound-register (sound'rejis-ter), n. An apt he singing voice or of a musical instrument. paratus for collecting and recording tones of It was invented in Paris in 1858. sound-shadow (sound's had"ō), n. The interception of a sound by some large object, as a building. It is analogous to a light-shadow, but is le distinct, since sound-waves have much greater length than light-waves. For just as a high wall, a hill, or a railway-cutting often completely cuts off sounds by forming a sound -shadore. Pop . Sci . Mo. , XXXI. 364. sound-wave (sound'wav), n. A wave of condensation and rarefaction by which sound is propagated in an elastic medium, as the air. 2. Having a magnificent or lofty sound; hence, See sound and wave. bombastic: as, mere sounding phrases. Keep to your subject close in all you say; Nor for a sounding sentence ever stray. Dryden and Soames , tr. of Boileau's Art of Poetry, i. 182. sounding-board (soun'ding-bord), n. 1. A canopy over a pulpit, etc., to direct the sound of a speaker's voice toward the audience. See abat - voix . Also soundboard . Since pulpits fail, and sounding - boards reflect Most part an empty, ineffectual sound. Cowper , Task, iii. 21. 2. In building, a board used in the deafening of floors, partitions, etc. See sound-boarding. 3. Same as soundboard, 1. sounding-bottle (soun'ding-bot"l), n. A ve el for raising water from a great depth for examination and analysis. It is generally made of wood, and has valves opening upward in the top and bottom. It is fixed on the sounding-line over the lead, so that the water pa es through it as the line descends; but when it is drawn up the force of gravity closes the valves, thus re IMG:content-1599.png:[blocks in formation] soupl (soup), v. and n. An obsolete or dialectal form of sup . soup2 (söp), n. [= D. soep = MHG. G. suppe = Sw. soppa Dan. suppe Icel. sūpa , soup; soupe , soup, broth, pottage, sop, = Pr. Sp. Pg. It. sop a , soup; soppe , sop , a sop, broth, D. sop , broth, = Icel. soppa = Sw. soppa , a sop: see sop . Soup2 is a doublet of sop , derived through OF., while soup1 , n., is a na- tive variant of sup .] 1. In cookery , originally, a liquor with something soaked in it, as a sop of bread; now, a broth; a liquid dish served usually before fish or meat at dinner. The basis of most soups is stock; to this are added meat, vegeta- bles, vermicelli, herbs, wine, seasoning, or whatever is chosen: as, cream soup ; tomato soup ; turtle soup . See julienne, purée, soup - maigre . Between each act the trembling salvers ring, From soup to sweet-wine. Pope, Moral E ays, iv. 162. soup 2. A kind of picnic in which a great pot of soup is the principal feature. Compare the like use of chowder. [West Virginia.] - Portable soup, a sort of cake formed of concentrated soup, freed from fat, and, by long-continued boiling, from all the putrescible parts.