Dictionary.net

A severe, sometimes fatal, disorder of adipose tissue occurring chiefly in preterm or debilitated infants suffering from an underlying illness and manifested by a diffuse, nonpitting induration of the affected tissue. The skin becomes cold, yellowish, mottled, and inflexible.

a disease of early infancy with hardening and tightness of the skin.

A disease of premature infants characterized by hardening of the skin. [Gr.]