Spectral color, Spectral sequence, Spectral music, Spectral density, Spectral theorem, Spectral efficiency, Spectral, Adams spectral sequence, Spectral line, Spectral mask, Spectral method, Hodge–de Rham spectral sequence, Spectral band, Serre spectral sequence, Frölicher spectral sequence, Spectral density estimation, Spectral theory, Spectral radius, Spectral gap, Spectral imaging, Multidimensional spectral estimation, Lyndon–Hochschild–Serre spectral sequence, Spectral index, Grothendieck spectral sequence, Spectral bat, Spectral modeling synthesis, Applied Spectral Imaging, Spectral printing, Arnold's spectral sequence, Spectral interferometry, Spectral space, Joint spectral radius, Spectral analysis, Spectral tarsier, Spectral (disambiguation), Eilenberg–Moore spectral sequence, Spectral Souls: Resurrection of the Ethereal Empires, Spectral power distribution, Spectral energy distribution, Källén–Lehmann spectral representation, Spectral Force 3

Maximum entropy spectral estimation, Full spectral imaging, Spectral centroid, Spectral decomposition, Peptide spectral library, Spectral network, Atiyah–Hirzebruch spectral sequence, Least-squares spectral analysis, Spectral band replication, Spectral Sciences Incorporated, Spectral flux density, Regularization by spectral filtering, Spectral dimension, Cosmic microwave background spectral distortions, Spectral Associates, CDMA spectral efficiency, Spectral resolution, Spectral element method, Spectral gap (physics), Spectral induced polarisation, Noise spectral density, Line spectral pairs, Free spectral range, Gursky's spectral tarsier, Asteroid spectral types, Spectral line shape, Čech-to-derived functor spectral sequence, Spectral signature, Stellar classification, Spectral slope, Spectral Evidence (1997 book), Spectral sensitivity, Orthogonal polarization spectral imaging, Radiant flux, Spectral atlas, Spectral rendering, Spectral abscissa, Spectral Display, Spectral width, Spectral asymmetry, Spectral noise logging, Spectral phase interferometry for direct electric-field reconstruction, Onwards to the Spectral Defile, Spectral acceleration, Spectral Worship, Spectral clustering, Radiometry, Radiant exitance, Polynomial matrix spectral factorization, Radiant intensity

Spectral color, Spectral sequence, Spectral music, Spectral density, Spectral theorem, Spectral efficiency, Spectral, Adams spectral sequence, Spectral line, Spectral mask, Spectral method, Hodge–de Rham spectral sequence, Spectral band, Serre spectral sequence, Frölicher spectral sequence, Spectral density estimation, Spectral theory, Spectral radius, Spectral gap, Spectral imaging, Multidimensional spectral estimation, Lyndon–Hochschild–Serre spectral sequence, Spectral index, Grothendieck spectral sequence, Spectral bat, Spectral modeling synthesis, Applied Spectral Imaging, Spectral printing, Arnold's spectral sequence, Spectral interferometry, Spectral space, Joint spectral radius, Spectral analysis, Spectral tarsier, Spectral (disambiguation), Eilenberg–Moore spectral sequence, Spectral Souls: Resurrection of the Ethereal Empires, Spectral power distribution, Spectral energy distribution, Källén–Lehmann spectral representation, Spectral Force 3, Maximum entropy spectral estimation, Full spectral imaging, Spectral centroid, Spectral decomposition, Peptide spectral library, Spectral network, Atiyah–Hirzebruch spectral sequence, Least-squares spectral analysis, Spectral band replication, Spectral Sciences Incorporated, Spectral flux density, Regularization by spectral filtering, Spectral dimension, Cosmic microwave background spectral distortions, Spectral Associates, CDMA spectral efficiency, Spectral resolution, Spectral element method, Spectral gap (physics), Spectral induced polarisation, Noise spectral density, Line spectral pairs, Free spectral range, Gursky's spectral tarsier, Asteroid spectral types, Spectral line shape, Čech-to-derived functor spectral sequence, Spectral signature, Stellar classification, Spectral slope, Spectral Evidence (1997 book), Spectral sensitivity, Orthogonal polarization spectral imaging, Radiant flux, Spectral atlas, Spectral rendering, Spectral abscissa, Spectral Display, Spectral width, Spectral asymmetry, Spectral noise logging, Spectral phase interferometry for direct electric-field reconstruction, Onwards to the Spectral Defile, Spectral acceleration, Spectral Worship, Spectral clustering, Radiometry, Radiant exitance, Polynomial matrix spectral factorization, Radiant intensity, Reflectance, Spectral splatter, Spectral submanifold, Leray spectral sequence, Hydrogen spectral series, Radiant exposure, Spectral flatness, Spectral leakage, Spectral Lines, Spectral geometry, Irradiance, The Spectral Sorrows, Spectral Genomics, Radiance, Spectral Hash, Frequency principle/spectral bias, Spectral Mornings, Spectral shape analysis, Spectral Dusk, Spectral triple, Spectral Evidence, Spectral purity, Chromatic spectral sequence, Pseudo-spectral method, Spectral graph theory, Spectral glide, Spectral concentration problem, Multispectral imaging, Alexis Spectral Data, May spectral sequence, Spectral (Skyfire album), Spectral layout, Spectral evidence, Spectral variability hypothesis, Spectral pygmy chameleon, Spectral Evidence (poetry collection), Spectral flux, Spectral set, Spectral risk measure, Spectral correlation density, EHP spectral sequence, Log-spectral distance, Spectral Database for Organic Compounds, Spectral imaging (radiography), Spectral (Dave Rempis album), Freudenthal spectral theorem, Bockstein spectral sequence, Colorimetry, Spectral invariants, Multi-spectral camouflage, Quillen spectral sequence, Spectral expansion solution, Radiosity (radiometry), Projection-valued measure, Spectral line ratios, Spectral regrowth, Phasor approach to fluorescence lifetime and spectral imaging, Hilbert spectral analysis, Spectral test, Spatiospectral scanning