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(Science: biochemistry) oligosaccharides covalently attached to lipid as in the glycosphingolipids found in plasma membranes of all animal and some plant cells.

The lipid part of glycolipids is sphingosine in which the amino group is acylated by a fatty chain, forming a ceramide. most of the oligosaccharide chains belong to one of four series, the ganglio, globo, lacto type 1 and lacto type 2 series. Blood group antigens are glycolipids.