"carbohydrate" in the noun sense
1. carbohydrate, saccharide, sugar
an essential structural component of living cells and source of energy for animals includes simple sugars with small molecules as well as macromolecular substances are classified according to the number of monosaccharide groups they contain
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License