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vibrating-line.
parting line
Americannoun
Metallurgy.
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the line at which two closed dies or two halves of a mold meet.
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a corresponding line or seam appearing on a molded or cast object.
Etymology
Origin of parting line
First recorded in 1870–75
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
