Dermatophyte /(dẽr*măt"ō̇*fīt [or] dẽr"mȧ*tō̇*fīt)/

Der·mat·o·phyte

Dermatophyte

n.
  1. A fungus infecting and parasitic on the skin, especially one which causes disease; as, ringworm is caused by a dermatophyte. (Med.)