FISSURE OF SYLVIUSfissure of Sylvius · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:FISSURE OF SYLVIUSTier 1Ordinal245Pythagorean74Classical231Reverse187Reverse Reduction97Standard684Final Large1404Ordinal180Reduced72Atbash507Isopsephy3227Ordinal266Abjad759