BOOK OF KNOWLEDGEbook of knowledge · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:BOOK OF KNOWLEDGETier 1Ordinal160Pythagorean70Reverse245Reverse Reduction65Standard239Final Large1439Ordinal104Reduced59Atbash1095Isopsephy1719Ordinal180Abjad241