Crossword solverSynonyms for spectrum13 crossword answers for “spectrum” (8), sorted by letter count.How many letters?All1312213214216317118122123112 letters 2line spectrum(4,8)mass spectrum(4,8)13 letters 2color spectrum(5,8)radio spectrum(5,8)14 letters 2action spectrum(6,8)atomic spectrum(6,8)16 letters 3acoustic spectrum(8,8)emission spectrum(8,8)infrared spectrum(8,8)17 letters 1microwave spectrum(9,8)18 letters 1absorption spectrum(10,8)22 letters 1radio-frequency spectrum(5-9,8)23 letters 1electromagnetic spectrum(15,8)