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

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