Z) (defined in Baum-Connes conjecture)

Z boson (defined in gauge bosons)

Zeeman effect (defined in nuclear magnetic resonance principles)

Zeppelin (defined in Towers and Galileo)

zero limit of entropy (defined in temperature)

zero matrix (defined in matrix)

zero-point vibration (defined in temperature)

zeroth law of thermodynamics

zeroth principle of thermodynamics (=zeroth law of thermodynamics)