neuraminidase neu·ra·min·i·dase (n&oobreve;r'ə-mĭn'ĭ-dās', -dāz', ny&oobreve;r'-)
n.
An enzyme that catalyzes the hydrolysis of terminal acylneuraminic residues from oligosaccharides, glycoproteins, and glycolipids. It is present as a surface antigen in myxoviruses. Also called sialidase.