Spectral /(?)/

Spec·tral

Spectral

a.
  1. Of or pertaining to a specter; ghosty.
    He that feels timid at the spectral form of evil is not the man to spread light.
    — F. W. Robertson.
  2. Of or pertaining to the spectrum; made by the spectrum; as, spectral colors; spectral analysis. (Opt.)

Phrases & Compounds

Spectral lemur
See Tarsius.