secobarbital
noun
seco·bar·bi·tal ˌse-kō-ˈbär-bə-ˌtȯl 
: a barbiturate C12H18N2O3 that is used chiefly in the form of its bitter hygroscopic sodium salt as a hypnotic and sedative
Example Sentences
Recent Examples on the Web In their legal quest to avoid a painful death, the prisoners offer up a dark variety of alternatives, including firing squad, sevoflurane gas, diazepam and fentanyl, an oral dose of secobarbital and pentobarbital. 
Keri Blakinger, Houston Chronicle, 26 June 2018 Once the secobarbital had been procured, Kathy seemed to relax. Kevin Simpson, The Denver Post, 2 Apr. 2017 Stone mixed applesauce with the powdered secobarbital, a powerful sedative that is fatal in high doses. Soumya Karlamangla, latimes.com, 30 June 2017
Keri Blakinger, Houston Chronicle, 26 June 2018 Once the secobarbital had been procured, Kathy seemed to relax. Kevin Simpson, The Denver Post, 2 Apr. 2017 Stone mixed applesauce with the powdered secobarbital, a powerful sedative that is fatal in high doses. Soumya Karlamangla, latimes.com, 30 June 2017 Word History
Etymology
from Seconal, a trademark + barbital
First Known Use
1951, in the meaning defined above
Medical Definition
secobarbital
noun
seco·bar·bi·tal ˌsek-ō-ˈbär-bə-ˌtȯl
: a barbiturate that is used chiefly in the form of its bitter hygroscopic sodium salt C12H17N2NaO3 as a hypnotic and sedative
called also quinalbarbitone
see seconal