Before revision: Spice, or spiciness, symbol (τ), is a term in oceanography referring to spatial variations in the temperature and salinity of seawater whose effects on density cancel each other .
After revision: Spice, spiciness, or 'spicity, symbol (τ), is a term in oceanography referring to spatial variations in the temperature and salinity of seawater over space or time, whose combined effects leave the water's density unchanged .