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

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

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