Medical Definition of treponema
1 capitalized : a genus of the family Spirochaetaceae comprising anaerobic spirochetes that are pathogenic in humans and other warm-blooded animals and include one (T. pallidum) causing syphilis and another (T. pertenue) causing yaws
2plural treponemata \-mət-ə\play or treponemas : any spirochete of the genus Treponema
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