an allotrope of iron, stable between 768°C and 910°C, similar to alpha iron but nonmagnetic.
Origin of beta iron
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a nonmagnetic allotrope of pure iron stable between 770°C and 910°C
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012