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n. Any of a class of drugs, used to treat diabetes, containing a five-membered heterocyclic ring containing a nitrogen and a sulfur atom and two carbonyl groups.

"Another recent study suggests that diabetics who are being treated with thiazolidinedione, an antidiabetic drug, provided “further evidence of a possible association between long-term use of thiazolidinediones and fractures, particularly of the hip and wrist, in patients with diabetes mellitus.”"