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

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

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