Spectral Spectral sequence Spectral color Spectral music Spectral density Spectral theorem Adams spectral sequence Spectral efficiency Spectral line Hodge–de Rham spectral sequence Frölicher spectral sequence Spectral mask Spectral method Spectral band Serre spectral sequence Spectral density estimation Lyndon–Hochschild–Serre spectral sequence Spectral imaging Arnold's spectral sequence Grothendieck spectral sequence Spectral gap Spectral index Applied Spectral Imaging Spectral modeling synthesis Spectral theory Spectral bat Spectral printing Spectral space Spectral interferometry Spectral Soul…

ls: Resurrection of the Ethereal Empires Multidimensional spectral estimation Joint spectral radius Spectral tarsier Spectral (disambiguation) Spectral analysis Spectral power distribution Spectral radius Eilenberg–Moore spectral sequence Spectral decomposition Spectral centroid Spectral Sciences Incorporated Full spectral imaging Spectral Force 3 Spectral energy distribution Maximum entropy spectral estimation Spectral dimension Atiyah–Hirzebruch spectral sequence Peptide spectral library Spectral network Källén–Lehmann

spectral representation Spectral band replication Spectral flux density Least-squares spectral analysis Spectral gap (physics) Regularization by spectral filtering Cosmic microwave background spectral distortions Spectral Associates Spectral induced polarisation Spectral resolution Gursky's spectral tarsier Noise spectral density Spectral element method Line spectral pairs Free spectral range CDMA spectral efficiency Asteroid spectral types Spectral Evidence Spectral slope Spectral line shape Čech-to-derived functor spectral sequence Radiant flux Spectral Display Spectral signature Spectral sensitivity Orthogonal polarization spectral imaging Spectral Worship