Definition of “spectral”

Drifting through his night fever, he sat up in bed as a spectral sail crossed the dark lagoon.

Finally, the shapes of the spectral lines correlate with temperature.

His straight-backed walk as he glided the length of the refectory had something of a spectral quality about it.

In Lollipops, tightly wound swirls of blues, yellows, greens, reds and oranges combine in a chromatic, spectral bouquet.

It had graduated from a spectral class low enough to be ignored by the computer, to one that would be most certainly taken into account.

Out of the unease of the first movement, and the spectral , world-weary waltzing of the second, rises song.

So it was that, a few minutes later, a spectral figure could be seen in the thick dusk.

The connection with dad's spectral visits is that he seems to be betraying Nicholas's zombie secret to other adults.

They had booked the mythical Studio Two, seemingly trying to reap whatever spectral magic The Beatles had left in their wake.