One of a group of organic compounds, of abundant occurrence in plants that can be resolved by hydrolysis into sugars and other organic substances known as aglycones. Specifically glycosides are acetals derived from a combination of various hydroxy compounds with various sugars. They are designated individually as glucosides, mannosides, galactosides, etc. Glycosides were formerly called glucosides, but the latter term now refers to any glycoside having glucose as its sugar constituent.