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

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

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