The Collaborative International Dictionary of English v.0.48:
Seborrhea \Seb"or*rhe*a\, n. [NL., fr. L. sebum tallow + Gr. ? to flow.] (Med.) A morbidly increased discharge of sebaceous matter upon the skin; stearrhea. [1913 Webster]WordNet (r) 3.0 (2006):
seborrhea n 1: a condition in which overactivity of the sebaceous glands causes the skin to become oily