1. Plural of bimetal; composite materials made of two different metals bonded together, often used in thermostats and mechanical devices.
Usage: technical; usually used in plural form

Examples

• The thermostat uses bimetals that bend when temperature changes.
• Bimetals are commonly found in automatic fire sprinkler systems.
• Engineers selected bimetals for the device because of their reliable thermal response.
• The bimetals in the circuit breaker help protect against electrical overload.
• Different combinations of bimetals produce varying rates of expansion.