chlamydia
noun(chla-myd-ia)
any of a genus (Chlamydia, family Chlamydiaceae) of spherical gram-negative intracellular bacteria; especially : one (C. trachomatis) that causes or is associated with various diseases of the eye and urogenital tract including trachoma, lymphogranuloma venereum, cervicitis, and some forms of urethritis