tertiary syphilis

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The final stage of syphilis, following a latent period that may last years, characterized by spread of the disease to many organs and tissues, including the skin, bones, joints, heart, brain, and spinal cord.

GNU Webster's 1913

1. adj. (Med.) the third and last stage of syphilis, in which it invades the bones and internal organs.

WordNet 3.0

1. n. the third stage; characterized by involvement of internal organs especially the brain and spinal cord as well as the heart and liver