[ˈspɛktr(ə)l], (Adjective)

Definitions:
- of or like a ghost
(e.g: a spectral, menacing face)


Phrases:

Origin:
early 19th century: from spectre + -al

[ˈspɛktr(ə)l], (Adjective)

Definitions:
- of or concerning spectra or the spectrum


Phrases:

Origin:
mid 19th century: from spectrum + -al