adjective
Definition: Relating to or affected by a sexually transmitted infection caused by the bacterium Treponema pallidum.
Example: The doctor explained the symptoms of syphilitic infections to the patient.
noun
Definition: A person who has a sexually transmitted infection caused by the bacterium Treponema pallidum, which can lead to serious health issues if not treated.
Example: The doctor explained the symptoms to the syphilitic, emphasizing the importance of treatment.