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Invar: Meaning and Definition of

In•var

Pronunciation: (in-vär'), [key]
— Trademark. Trademark.
  1. a brand of iron alloy containing 35.5 percent nickel and having a very low coefficient of expansion at atmospheric temperatures.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
invaluable invariable
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