acoustical material
McGraw-Hill Science & Technology Dictionary:
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acoustical material
(ə′küs·tə·kəl mə′tir·ē·əl)
(materials) Any natural or synthetic material that absorbs sound; acoustical tile is an example.
McGraw-Hill Dictionary of Architecture & Construction:
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acoustical material
Any material especially designed to absorb sound.
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McGraw-Hill Science & Technology Dictionary
McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.
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