Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A white crystalline substance, C6H9NO3, used as an anticonvulsant in the treatment of epilepsy.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun pharmacology An anticonvulsant drug used to control epilepsy.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[tri– + meth(yl) + di– + –one.]

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Examples

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