sialyloligosaccharide

si·al·yl·ol·i·go·sac·cha·ride (si-al″əl-ol″ĭ-go-sakґə-rīd) any of the oligosaccharides to which are attached one or more sialic acid residues; they accumulate when neuraminidase (sialidase) activity is deficient, as in sialidosis and galactosialidosis.