Γ	boundary of domain of interest
γ	interfacial tension
${\widehat{\gamma }}^{\cdot }$	activity coefficient
ει	measure of quantity of entity ι per macroscale volume
η	entropy density
θ	temperature
Λ	entropy production rate density
λ	vector of Lagrange multipliers
λ	Lagrange multiplier
μ	chemical potential
μ͘0	reference chemical potential
μ̂	dynamic viscosity
ρ	mass density
σ	Lagrangian stress tensor for the solid phase
ϕ	entropy density flux vector
ψ	acceleration potential (e.g., gravitational potential)
Ω	spatial domain
Ω̄	closed spatial domain
Ωss	solid surface spatial domain
ω	mass fraction of a species in an entity