spectral
adjective /ˈspektrəl/
/ˈspektrəl/
- (literary) like a ghost; connected with a ghost
- a spectral figure
- (specialist) connected with a spectrum
- spectral bands
- the full spectral range
Word Originsense 1 early 19th cent.: from spectre + -al.sense 2 mid 19th cent.: from spectrum + -al.