a. 光谱的, 鬼怪的, 幻觉的

[医] 光谱的

Spectral \Spec"tral\, 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. (Opt.) Of or pertaining to the spectrum; made by the
spectrum; as, spectral colors; spectral analysis.

{Spectral lemur}. (Zo["o]l.) See {Tarsius}.