folliculitisPath.|fɒˌlɪkjuːˈlaɪtɪs| [f. L. follicul-us follicle + -itis.] Inflammation of a follicle or follicles. 1860Fowler Med.Voc., Folliculitis, follicular inflammation.1874Van Buren Dis. Genit. Org. 77 Folliculitis sometimes appears along the urethra.