A stress component in a system which consists of unequal principal stresses. There are three deviatoric stresses, obtained by subtracting the mean (or hydrostatic) stress (σ-) from each principal stress (i.e. σ1 – σ-, σ2 – σ-, and σ3 – σ-). Deviatoric stresses control the degree of body distortion.
Subjects: Earth Sciences and Geography.