n., pl., gum·mas, or gum·ma·ta (gŭm'ə-tə).
A small rubbery granuloma that has a necrotic center and is enclosed by an inflamed fibrous capsule. It is characteristic of an advanced stage of syphilis.
[New Latin, from Late Latin, gum. See gum1.]
gummatous gum'ma·tous adj.




