neuraminidase

noun

1. any of various enzymes, found esp in viruses, that catalyse the breakdown of glucosides containing neuraminic acid, an amino sugar

n.

1. An enzyme that catalyzes the hydrolysis of terminal acylneuraminic residues from oligosaccharides, glycoproteins, and glycolipids. It is present as a surface antigen in myxoviruses.sialidase