a nonmagnetic allotrope of pure iron stable between 770°C and 910°C
beta iron in American English
noun
Metallurgy
an allotrope of iron, stable between 768°C and 910°C, similar to alpha iron but nonmagnetic
Word origin
[1890–95]This word is first recorded in the period 1890–95. Other words that entered Englishat around the same time include: historicism, masochism, neoclassicism, pogey, wireless