spectral
adjective/iʃpɛkˈtɾaɫ/medium
es·pec·tral
Definitions
1Relating to or resembling a spectre (ghost, apparition).
A spectral figure appeared in the dark corridor.
The fog gave the castle a spectral air.
Common collocations
spectral figurespectral lightspectral analysis
2Relating to the spectrum (the range of radiations or colours).
Spectral analysis allows for the identification of chemical elements.
The colours of the rainbow form a spectral continuum.
Etymology
Do latim "spectralis", de "spectrum" (aparição, fantasma).