Wiktionary
                    aglycone
                    
                        
                
                                                                    n. (context organic chemistry English) The non-sugar fragment of a glycoside.
Wikipedia
                    Aglycone
                    
                        
                
                                                                    An aglycone, or aglycon, is the compound remaining after the glycosyl group on a glycoside is replaced by a hydrogen atom.
For example, the aglycone of a cardiac glycoside would be a steroid molecule.
Classes of phytochemicals found in the aglycone and glycosides forms :
- Polyphenols