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[trahy-meth-uh-dahy-ohn] /traɪˌmɛθ əˈdaɪ oʊn/
noun, Pharmacology.
a synthetic, white, crystalline powder, C 6 H 9 NO 3 , used as an anticonvulsant to control petit mal epileptic seizures.
Origin of trimethadione
trimeth(yl) + (ox)a(zolidine)dione, components of its chemical name Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for trimethadione


a crystalline compound with a bitter taste and camphor-like odour, used in the treatment of epilepsy. Formula: C6H9NO3
Word Origin
from tri- + meth(yl) + di-1 + -one
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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trimethadione in Medicine

trimethadione tri·meth·a·di·one (trī-měth'ə-dī'ōn')
A white crystalline substance used as an anticonvulsant in the treatment of epilepsy.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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