1. Plural of eutectoid; a solid solution or mixture of two or more solid phases that forms from a single solid phase at a specific temperature and composition, analogous to a eutectic but occurring in the solid state.
Usage: metallurgy; materials science; technical term

Examples

• The eutectoids in steel form when austenite decomposes at the eutectoid temperature.
• Metallurgists study eutectoids to understand phase transformations in alloys.
• The iron-carbon system exhibits a well-known eutectoid reaction at 727°C.
• Different eutectoids have distinct microstructures depending on cooling rates.
• The formation of eutectoids is crucial in heat treatment of metals.