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

Spectral energy distribution, Källén–Lehmann spectral representation, Maximum entropy spectral estimation, Spectral Sciences Incorporated, Spectral Force 3, Spectral network, Spectral dimension, Peptide spectral library, Spectral band replication, Least-squares spectral analysis, Atiyah–Hirzebruch spectral sequence, Spectral induced polarisation, Spectral gap (physics), Noise spectral density, Regularization by spectral filtering, Spectral element method, CDMA spectral efficiency, Spectral Associates, Spectral flux density, Cosmic microwave background spectral distortions, Spectral resolution, Gursky's spectral tarsier, Asteroid spectral types, Free spectral range, Line spectral pairs, Spectral slope, Spectral line shape, Čech-to-derived functor spectral sequence, Spectral signature, Radiant flux, Spectral Evidence (1997 book), Spectral sensitivity, Onwards to the Spectral Defile, Spectral Display, Spectral Worship, Orthogonal polarization spectral imaging, Spectral rendering, Stellar classification, Spectral width, Spectral atlas, Spectral noise logging, Polynomial matrix spectral factorization, Spectral phase interferometry for direct electric-field reconstruction, Spectral Lines, Radiant intensity, Radiometry, Spectral abscissa, Spectral Genomics, Spectral asymmetry, Spectral flatness

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