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inversion casting

American  

noun

Metallurgy.

  1. casting from an electric furnace inverted over the mold.

  2. a process of casting, used especially for small statuary or the like, in which the mold is inverted after the outer surfaces have hardened so as to drain off the molten metal at the center.

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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.