Dictionary.net

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

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

A compound of carbon, hydrogen, and oxygen.

A substance containing carbon, hydrogen, and oxygen, the two latter in the proportion to form water, H2O; the sugars, starches, and cellulose belong to the class of carbohydrates.

Any compound made up of carbon in groups of six atoms, and of hydrogen and oxygen in the proportions to form water.