Genital warts are caused by HPV (human papillomavirus). Learn through photos what these growths look like, how they are spread, and where they occur. Genital warts are caused by HPV (human papillomavirus).
Definition of synodic period. : the time between two successive conjunctions of a planet with the sun.
Definition of caustic. 1  1 : a caustic agent: such asa : a substance that burns or destroys organic tissue by chemical actionb : a strong corrosive alkali (such as sodium hydroxide 2  ) 2 : the envelope of rays emanating from a point and reflected or refracted by a curved surface.