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

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

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