mesomorphism

(physical chemistry) A state of matter intermediate between a crystalline solid and a normal isotropic liquid, in which long rod-shaped organic molecules contain dipolar and polarizable groups.

The pattern of beliefs and values that defines the preferred body shape as being that of a mesomorph. Advocates of mesomorphism believe that muscularity and slimness are good attributes, and they assume that a mesomorphic body shape reflects control, efficiency, discipline. health, and beauty.