polychaete: chiefly marine annelids possessing both sexes and having paired appendages (parapodia) bearing bristles
annelid: worms with cylindrical bodies segmented both internally and externally
candle: 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