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Related to Wood's metal: Fusible Alloys
Wood's metal[′wu̇dz ‚med·əl]
A fusible alloy of the Cerro Corporation that contains 50% bismuth, 25% lead, 12.5% tin, and 12.5% cadmium, and melts at 158°F (70-72°C); used for automatic sprinkler plugs.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.