What does zeroth law of thermodynamics mean?
• ZEROTH LAW OF THERMODYNAMICS (noun) The noun ZEROTH LAW OF THERMODYNAMICS has 1 sense: 1. the law that if two bodies are in thermal equilibrium with a third body then the first two bodies are in thermal equilibrium with each other Familiarity information: ZEROTH LAW OF THERMODYNAMICS used as a noun is very rare.