Synonyms for LX (same or very similar meaning)
WordNet sense 1 (the cardinal number that is the product of ten and six):
sixtyWordNet sense 2 (a unit of illumination equal to 1 lumen per square meter; 0.0929 foot candle):
luxWordNet sense 3 (being ten more than fifty):
threescoreWordNet sense 4 (being or denoting a numerical quantity but not order):
cardinalFrom the ODE community, based on WordNetadd/edit