/aw"steuh nuyt'/ , n. Metall.
1. a solid solution of carbon or of carbon and other elements in gamma iron, having a face-centered cubic lattice at all temperatures.
2. an allotrope of iron, stable between 910°C and 1400°C and having a face-centered cubic lattice; gamma iron.
[ 1900-05; named after Sir W. C. Roberts- Austen (1843-1902), English metallurgist; see -ITE 1 ]