mucopolysaccharide
Concise Oxford English Dictionary © 2008 Oxford University Press:
mucopolysaccharide /ˌmjuːkəʊpɒlɪˈsakərʌɪd/
▶noun Biochemistry a substance occurring chiefly in connective tissue and consisting of complex polysaccharides containing amino groups.
'mucopolysaccharide' also found in these Oxford entries:

