Invar

/ɪnˈvɑr/
IPA guide

Definitions of Invar
  1. noun
    an alloy of iron and nickel having a low coefficient of thermal expansion; used in tuning forks and measuring tapes and other instruments
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    type of:
    alloy, metal
    a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten
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