Tra·cho·ma n.  Med. a contagious granular conjunctivitis caused by the bacterium Chlamydia trachomatis.  It is a chronic inflammation of the conjunctiva -- Tra*chom*a*tous a.
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  Chlamydia trachomatis
       n : bacteria responsible for the sexually transmitted diseases
           chlamydia and lymphogranuloma venerum [syn: C.
           trachomatis]