ARCCOSINEarccosine · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:ARCCOSINETier 1Ordinal87Pythagorean42Classical83Reverse156Reverse Reduction57Standard526Final Large1176Ordinal103Reduced22Atbash148Isopsephy476Ordinal107Abjad368