〔EC 3.2.1〕乳糖基酰基〔神经〕鞘氨醇酶：能催化乳糖基酰基〔神经〕鞘氨醇类中O-糖苷键水解的水解酶类的任何一种酶。另见galactosyl ceramidase(lactosyl ceramidase Ⅰ)和β-galactosidase(lactosyl ceramidase Ⅱ)项下