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Luminal

[loo-muh-nl] /ˈlu mə nl/
Pharmacology, Trademark.
1.
a brand of phenobarbital.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin and History for Luminal
n.

trade name of phenobarbitone, used as a sedative and hypnotic, coined 1912 in German from Latin lumen "light," related to lucere "to shine" (see light (n.)), + -al (3), "the root here being used, very irregularly, as an equivalent of pheno- [Flood].

luminal

adj.

"of or pertaining to a lumen," 1897, with -al (1).

Online Etymology Dictionary, © 2010 Douglas Harper
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