or  tom*a*tin  n :  a crystalline antibiotic glycosidic alkaloid C₅₀H₈₃NO₂₁ that is obtained esp. from the juice of the stems and leaves of tomato plants resistant to wilt, that is active against fungi including some causing disease in humans, and that is used as a precipitating agent for steroids .
 
 
 
Similar sounding terms:  di·am·i·dine 
 
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