Source : Webster's Revised Unabridged Dictionary (1913)

Miliaria \Mil`i*a"ri*a\, n. [NL. See {Miliary}.] (Med.)
   A fever accompanied by an eruption of small, isolated, red
   pimples, resembling a millet seed in form or size; miliary
   fever.

Source : WordNet®

miliaria
     n : obstruction of the sweat ducts during high heat and humidity
         [syn: {prickly heat}, {heat rash}]