- a brand of iron alloy containing 35.5 percent nickel and having a very low coefficient of expansion at atmospheric temperatures.
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Examples from the Web for invar
She strove to rise to her feet, but Una had her orders from Invar.
Anak and Invar walked slowly up to the cave where Una waited.
With shouts of triumph, Anak and Invar bounded down the slope.
Invar threw his shoulder against a huge boulder on the slope.
Invar will be honored if his friend will eat of the liver of his kill.
- trademark an alloy containing iron (63.8 per cent), nickel (36 per cent), and carbon (0.2 per cent). It has a very low coefficient of expansion and is used for the balance springs of watches, etc
C20: shortened from invariable
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012