gumma noun. ['gʌmǝ] Pl. -as, -ata [-ǝtǝ]. E18.
[mod. Latin from Latin gummi GUM noun².]
Medicine. A granulomatous lesion characteristic of tertiary syphilis, with a firm rubbery core of dead tissue.

■ gummatous adjective of the nature of or resembling a gumma; characterized by gummas: L17.

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