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

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