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Medical Definition of Trichonocardiosis
1. An infection of hair shafts, especially of the axillary and pubic regions, with nocardiae. Yellow, red, or black concretions develop around the infected hair shafts and contain the causative agent and, frequently, micrococci; the micrococci probably account for the variety of the colours of the concretions and for the resultant varieties of trichonocardiosis which have been described. See: trichomycosis, trichomycosis axillaris. Origin: tricho-+ Nocardia + G. -osis, condition (05 Mar 2000)