noun.
A colorless crystalline vitamin, C10H16N2O3S, of the vitamin B complex, essential for the activity of many enzyme systems and found in large quantities in liver, egg yolk, milk, and yeast.
the GNU version of the Collaborative International Dictionary of English
noun.
a B vitamin (C10H16N2O3S) that aids in body growth; -- called also vitamin H and coenzyme R. It functions as a coenzyme in many carboxylation reactions.
noun.
A sulfur-containing member of the vitamin B complex found in liver, egg yolk, milk and yeast, essential to the activity of multiple enzyme systems.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a B vitamin that aids in body growth
Word Usage
"Wagner-Jauregg, for example, found biotin is identical to"