I₁N₁V₄A₁R₁S₁

9 points

INVARS is validvalid

INVAR, an iron-nickel alloy [n]

22,109 of 196,601 in NWL2023·also valid in CSW24

INVAR, (tradename) an iron-nickel alloy with very little heat expansion [n]

123,753 of 280,887 in CSW24·also valid in NWL2023