noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An alloy of iron containing 35.5% nickel, and having a very low coefficient of expansion. countable, uncountable
2. 2
   an alloy of iron and nickel having a low coefficient of thermal expansion; used in tuning forks and measuring tapes and other instruments wordnet

Synonyms

All synonyms

alloylow expansion alloynear zero expansion alloynickel iron alloy

Antonyms

All antonyms

high expansion alloythermally expansive alloy

Etymology

Shortening of invariable.