Invar

[ in-vahr ]

Phonetic (Standard)IPA

Trademark.

a brand of iron alloy containing 35.5 percent nickel and having a very low coefficient of expansion at atmospheric temperatures.

Invar

/ ɪnˈvɑː /

noun

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

Origin of Invar¹

C20: shortened from invariable

As they ran, Invar's foot dislodged a boulder which thundered down the slope.

As the ramifications of the plan seeped into Invar's brain, his face glowed with enthusiasm.

Invar raised a rock high above his head with both hands and cast it at her.

Invar is practically non-expansible when the nickel in it is about 37%.

In time-keeping invar is likely to be as valuable as in surveying.

April 17, 2024axolotl

[ak-suh-lot-l ]

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