Synonyms for Standard Candle (same or very similar meaning)
WordNet sense 1 (the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin):
candle, candela, CDFrom the ODE community, based on WordNetadd/edit