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barbitone

American  
[bahr-bi-tohn] / ˈbɑr bɪˌtoʊn /

noun

Pharmacology (chiefly British).
  1. barbital.


barbitone British  
/ ˈbɑːbɪˌtəʊn, ˈbɑːbɪˌtæl /

noun

  1. a long-acting barbiturate used medicinally, usually in the form of the sodium salt, as a sedative or hypnotic

"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

Etymology

Origin of barbitone

First recorded in 1910–15; barbit(uric) + -one