spectral

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Adjective spectral has 2 senses

spectral - of or relating to a spectrum; "spectral colors"; "spectral analysis"
apparitional, ghostlike, ghostly, phantasmal, spectral, spiritual - like or being a phantom; "a ghostly face at the window"; "a phantasmal presence in the room"; "spectral emanations"; "spiritual tappings at a seance"
Antonym: natural (indirect, via supernatural)

spectators spectatular specter specters specticism specticle spectinomycin spectra spectral spectral color spectral colour spectral leakage spectrascope spectrascopes spectrascopy spectre spectre at the wake

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